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73-87 Chevy _ GMC Trucks => Members Rides => Topic started by: 1980K20 on January 23, 2021, 07:24:46 PM

Title: 1980 K20 4x4
Post by: 1980K20 on January 23, 2021, 07:24:46 PM
Hi, this is my build thread for my 4x4. I originally bought this as a donor drive train for my 52 international, but ended up stumbling into full restoration. I'm in over two years on this, probably another six months to done. Final look will be blue with silver two tone.

This is the truck after I bought it. I'll post a few pictures now and then as I have time.

Mark
Title: Re: 1980 K20 4x4
Post by: Mike81K10 on January 23, 2021, 07:44:53 PM
Welcome from AL and nice truck!
Title: Re: 1980 K20 4x4
Post by: 1980K20 on January 23, 2021, 08:41:06 PM
Thanks for the welcome! Up here near Seattle, about as far from AL as one can get...

This is the recipe for stumbling into a restoration.

1) take truck to differential shop to have seals checked or replaced. Discover the right side had been submerged in water and decide to fix it faster than scrap it (truck didn't cost much at all). Now the investment is substantial.

2) decide to overhaul the very tired engine. Discover it's not original, a 305. Stock was 350. Find awesome engine builder in the state who will build just what I want : great 400 ft-lbs torque, 359 HP, with regular gas, EFI and roller cam.

3) pull the engine. Start with taking the front clip off.  Then the fenders. Oh yeah I've got a barn why not pull the cab since it's easier to replace rusty gas tank and get the transmission out.

4) after it's all off tell yourself that it's a shame to put a new shiny engine back into a dirty frame and body. Off comes the bed.

5) completely dismantle the truck. Frame blasted and powder coated. Tranny rebuilt..

And so it goes...

Title: Re: 1980 K20 4x4
Post by: Mike81K10 on January 24, 2021, 01:18:39 AM
I kind of started off the same way. Was going to do a little repair work and ended up doing a complete restoration. Best wishes and post pics as you move along.
Title: Re: 1980 K20 4x4
Post by: JohnnyPopper on January 24, 2021, 11:25:55 AM
Welcome from SoCal San Diego!

Doing a C10 same year, yours is looking really good!

Whats under the bag behind the motor???
Title: Re: 1980 K20 4x4
Post by: 1980K20 on January 24, 2021, 09:17:19 PM
Ahhhh, fond memories of San Diego...

Getting the cab ready to haul up to the body shop, removed the windshield and rear window and nearly cried. Lots of rust and holes under the seals. But the guy was able to easily fix it with metalized epoxy. He ringed the entire window section with this epoxy so if water gets under the seal again, it won't rust.

I ended up replacing everything on the front end except the cab (long story, it wasn't supposed to be so). After market part quality is awful, lots of repair to get the lines right. You can see the repairs on the dry fit. It's all ready now, waiting for more primer and later paint. Working on the bed now.

That car is my '67 Camaro with the six cylinder I mentioned in another thread. I seriously thought about putting this new truck engine in it...

Mark
Title: Re: 1980 K20 4x4
Post by: carmen77 on January 24, 2021, 11:44:56 PM
Welcome from SoCal.
Nice looking truck


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Title: Re: 1980 K20 4x4
Post by: Chevygold on January 25, 2021, 08:56:29 AM
Wish I had a barn! Haven't tried yet but I don't think my C10 will fit through the door of my garage so panels will have to come off to be taken care of inside the garage prior to refitting. I'm nearly finished a Land Rover restoration done the same way, aluminium a bit lighter than steel though!
Graham
Title: Re: 1980 K20 4x4
Post by: Mike81K10 on January 25, 2021, 03:01:26 PM
At least you have a garage. I have been doing my restoration in my driveway, have no garage.
Title: Re: 1980 K20 4x4
Post by: Chevygold on January 28, 2021, 01:14:06 PM
The garage is good when it rains, which it does here a lot, but I still had to rebuild my Rover V8 on the drive in between the rain storms!
Graham
Title: Re: 1980 K20 4x4
Post by: Chevygold on January 28, 2021, 01:50:09 PM
Here's a pic of my truck in the rain, just for a change!
Title: Re: 1980 K20 4x4
Post by: 1980K20 on February 01, 2021, 12:21:42 AM
Thanks everyone!

I decided my next thing is to put a collage of the different colors I've been thinking about. They'll be ready to paint soon, but are taking the bed apart now. That's a mess.

The wrx blue was one of them from the book of earmarked. The other day I saw one on the road too. Man, it's an omen.

Mark

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Title: Re: 1980 K20 4x4
Post by: frotosride on February 06, 2021, 08:59:02 PM
Looking good!
I was wondering if there's new metal under the epoxy for the windshield? 
Title: Re: 1980 K20 4x4
Post by: 1980K20 on February 07, 2021, 02:04:56 AM
Looking good!
I was wondering if there's new metal under the epoxy for the windshield?

Thanks! I think some new metal on the rear window, but no new metal on front. You can't get to the backside and the holes weren't as bad as if thought. But I'm not a body work guy. It was metalized epoxy. I assume that's lots of metal mixed in for a little more stability.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on February 07, 2021, 04:46:36 PM
Hey folks, my wife and I combed through several years of color books in search of the perfect blue.  I'll do two-tone with silver.  We're down to three colors out of eight that we were looking at.  She says, "They're so close, you make the decision".  Man, almost as much pressure as a Superbowl quarterback!

2006 Subaru WRX - What VileZambonie's got on his truck
2005 Mini Cooper Hyper Blue
2007 Chevy Arrival

I've probably got a few more months before I make the final decision.  For now I just need to paint my new steering shaft, it's bare metal.

Please do write your opinions, always happy to hear perspectives!  I'm including the collage of all eight and the three candidates.

Thanks,
Mark
Title: Re: 1980 K20 4x4
Post by: 1980K20 on February 10, 2021, 11:16:05 PM
Good news and bad news... First the bad news. The rust is really bad in the bed, worse than anticipated. We're going to rebuild most of the bed from scratch, reuse just a few parts. The tailgate survived. A flat bed conversion would have been cheaper, but it just doesn't seem right...

Now the good news. I've chosen the blue. A friend turned me onto 2019 Camaro Riverside Blue. That's it!
Title: Re: 1980 K20 4x4
Post by: carmen77 on February 10, 2021, 11:24:28 PM
Love the color choice!


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Title: Re: 1980 K20 4x4
Post by: 1980K20 on February 10, 2021, 11:54:21 PM
Thanks Carmen!


The plan is two toned blue / silver. Maybe it's such a nice color, one tone is enough.

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Title: Re: 1980 K20 4x4
Post by: JohnnyPopper on February 11, 2021, 08:19:51 PM
That is a very strong color, even manly (don't look Carmen  ;)) I wouldn't dilute the power... 8)
Title: Re: 1980 K20 4x4
Post by: carmen77 on February 11, 2021, 08:31:29 PM
Hey now! I saw that!


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Title: Re: 1980 K20 4x4
Post by: JohnnyPopper on February 11, 2021, 10:00:51 PM
Not much gets by you Gurl... 8)
Title: Re: 1980 K20 4x4
Post by: carmen77 on February 11, 2021, 10:03:20 PM
That’s right!


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Title: Re: 1980 K20 4x4
Post by: 1980K20 on February 19, 2021, 09:48:18 PM
Decided to call the truck Big Blue.

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Title: Re: 1980 K20 4x4
Post by: 1980K20 on February 23, 2021, 11:21:48 PM
Alrighty, need to finish color options for Big Blue.

Two-tone or not?  Pin stripes?
Asking all my friends opinions....
Thanks!
Mark
Title: Re: 1980 K20 4x4
Post by: carmen77 on February 23, 2021, 11:29:04 PM
I like the option with 2, 1/2” pin stripe

Second choice would be white on bottom and white on roof.

You can’t go wrong with any of the options you have selected....they all look great!


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Title: Re: 1980 K20 4x4
Post by: Shifty on February 24, 2021, 08:32:11 AM
I like the 80's wide white (blue roof) option.
Title: Re: 1980 K20 4x4
Post by: Mike81K10 on February 24, 2021, 09:59:01 AM
1980's look! That's what I am going with on my truck.
Title: Re: 1980 K20 4x4
Post by: JohnnyPopper on February 24, 2021, 10:29:40 PM
I like the option with 2, 1/2” pin stripe

Second choice would be white on bottom and white on roof.

You can’t go wrong with any of the options you have selected....they all look great!


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Ditto! Stay with one color  ;D
Title: Re: 1980 K20 4x4
Post by: 1980K20 on February 24, 2021, 11:27:16 PM
My wife had suggested the pin stripe, less work, back on the road sooner, less cost. I hadn't even thought of that. I liked the idea of all blue, the guy paints and done versus anything that involves mounting, then unmounting. But we both like the idea of breaking up all that blue on the long bed. If it were short bed, different story.

Mike, awesome work on your truck! Following your thread, inspiring. My bucket list is to do my '52 international myself and not use a painter.

My wife says, walk away, come back, see which one really catches my eye. It comes back to the more traditional 1980s look. I guess I like retro.

Thanks everybody for all your input!

Mark

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Title: Re: 1980 K20 4x4
Post by: 1980K20 on February 25, 2021, 12:01:49 AM
Just when I say that's it, it's not. Looked more online, and that's too much silver. Found this low rider in the same blue that we liked. Just keep bottom line up to the gas cap and blue can.

That's nice truck, really love the blue.
(https://uploads.tapatalk-cdn.com/20210225/811e3492bffe22214b43f345f8b1b1f7.jpg)

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Title: Re: 1980 K20 4x4
Post by: 1980K20 on March 24, 2021, 12:02:14 AM
Visited the truck today, decided on the silver for the second color and the line. Paint starts next week or the week after. Should be home before may!

After they get the cab mounted, I'll go up with my remanufactured brakes and steering column. At least get that on before the fenders go on. I'd love to do electrical too, but it needs to get home first.
Title: Re: 1980 K20 4x4
Post by: Shifty on March 24, 2021, 09:44:38 AM
We love progress pics!  Thanks!
Title: Re: 1980 K20 4x4
Post by: carmen77 on March 24, 2021, 10:12:52 AM
Looking good!


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Title: Re: 1980 K20 4x4
Post by: 1980K20 on April 10, 2021, 01:05:08 PM
Very excited to pick up new wheels and tires today. Not certain when I'll get to install them. Car gets first coat of paint in the cab this coming week.

American Racing AR23 16x8 wheels.
Open range all terrain from les schwab 235/85r16

I had one spare of the original tires, 35x12.5x16.5. It had never been run, but was 18 years old.

Here's two pictures with the spare tire. The 35" tires are a beast! No wonder the fenders were sawed up to fit.
Title: Re: 1980 K20 4x4
Post by: Mike81K10 on April 10, 2021, 03:55:39 PM
Did you complete the painting? Pics!
Title: Re: 1980 K20 4x4
Post by: 1980K20 on April 11, 2021, 12:02:37 PM
Did you complete the painting? Pics!

The auto body shop is doing this as a filler. I thought first paint would have been last week, but now this week. He says he retired and gives up the ship June 1st. Timing is getting tight. I wish it were faster, was hoping to have the truck home this month, but not going to happen.

I stopped by my home town autobody shop this week when in Wisconsin on spring break. I got a nice calendar. 😁 They do their metal work so there's zero filler. After I retire, I'll do my '52 international myself, with a goal of zero bondo. I haven't welded since I was 18 and that was with a stick and I wasn't very good at it. I hear MIG is the way to go. It may not look as nice as a professional, but it will be satisfying.

Mark
Title: Re: 1980 K20 4x4
Post by: 1980K20 on April 13, 2021, 07:09:27 PM
Made it up to visit the truck this morning, paint has begun. I'm very pleased with the color. It will pop even more when there's clear coat on top.

Expecting to have the cab and fenders done within a month, fingers crossed.

Also put the new wheels into the truck. They pull the outside of the wheels in roughly four inches so the fenders should no longer be at risk of hitting. Woohoo!
Title: Re: 1980 K20 4x4
Post by: mrghostwalker on April 16, 2021, 04:02:36 PM
I'm liking those rims! That's the style I've been looking for to use on my 83 K10/20. 
Title: Re: 1980 K20 4x4
Post by: 1980K20 on April 18, 2021, 09:18:57 AM
Thanks all!

Funny thing is I'm selling the old wheels to the same high school mudding kid I sold other stuff to. The price of the original truck is nearing zero.

The body shop guy wasn't happy with the pitting on the floor so he put another sealing primer with a little texture on it.

Maybe I'll just put a rubber mat on the floor, forget about carpet. It will be nice.
Title: Re: 1980 K20 4x4
Post by: Mike81K10 on April 18, 2021, 07:35:35 PM
Like the floor board and look forward to seeing the paint with clear. Think it will look nice. You seem to be making good progress.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on April 24, 2021, 01:41:51 PM
Painter made great progress this week.

Interior is done, you can see the color pretty well in the second picture. Third picture is the textured floor boards. Last picture is the underside "bed liner".

Looking forward to what gets painted this week!

Plan for this is to get cab, fenders, hood done so I can get the truck back to the shop. If the stars align, I can at least get the master cylinder in before the fenders, but I likely have to put it all together afterwards. Hard to take days off from work right now.  Maybe I can convince him to bring it with just the cab. It would be nice to get electrical in also. When the bed is done, will tow it back up, get that installed.

Mark
Title: Re: 1980 K20 4x4
Post by: Mike81K10 on April 24, 2021, 07:57:26 PM
That looks really nice, good work!
Title: Re: 1980 K20 4x4
Post by: 1980K20 on April 25, 2021, 12:02:26 PM
Thanks Mike!

By coincidence, I saw for the first time a Camaro of the same color, Riverside Blue. The black wheels will look good.

Title: Re: 1980 K20 4x4
Post by: 1980K20 on May 12, 2021, 12:14:39 AM
Very excited after seeing this picture of the dry fit of the cab. Painter puts the cab and fenders on, marks the line for the two tone, takes it apart and paints in the booth. Man, I'm afraid to see the bill.

Lighting is better than in the booth, support happy about the color.
Title: Re: 1980 K20 4x4
Post by: frotosride on May 12, 2021, 07:11:23 AM
Definitely like the color. I like the way there aren't any shadows in the body lines like where the B-pillar transitions to the lower part of the cab.
Painters jail is never cheap!
Title: Re: 1980 K20 4x4
Post by: mrghostwalker on May 18, 2021, 03:51:24 PM
Yup. I agree- that is a nice color!
 Unfortunately now it will be too pretty to play in the mud.
Title: Re: 1980 K20 4x4
Post by: Shifty on May 18, 2021, 05:09:58 PM
Naw, just got to find some blue mud... :D
Title: Re: 1980 K20 4x4
Post by: carmen77 on May 18, 2021, 05:13:04 PM
Nothing is too pretty to play in the mud!


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Title: Re: 1980 K20 4x4
Post by: 1980K20 on May 19, 2021, 10:32:51 PM
Thanks all! (dang, lost everything I typed).

Visited truck again, the color has a Flop to it due to pearl, changes color and hue with lighting and angle. The wheels are black, the bumpers black. With the flop to break up the length, decided single color.  No silver Denninsecond tone.

Painter has done amazing job!

Enclosing pictures, purplish hue with flash, straight blue without.

Comes home next week, front end assembled. Then it's time for me to get busy again.
Title: Re: 1980 K20 4x4
Post by: JohnnyPopper on May 19, 2021, 10:40:55 PM
Sooo glad no two tone!

Beautiful Keep the pics coming PLEASE  ;D
Title: Re: 1980 K20 4x4
Post by: 1980K20 on May 30, 2021, 08:47:54 AM
Thanks Jonny Popper!

For seats, I really want a headrest. No vehicle is worth a rear end collision by a distracted driver on their cell phone running my neck for life. I found a place that will rebuild my seat and put an aftermarket head rest in place. He says the metal is not chromed on the aftermarket and looks kids of crummy. Reasonable price.

I found these nice looking seats, they will add a head rest and cup holders, lol. New, leather, look really nice, so they're spendy. Cerullo, American made. I've been waiting for the truck to come back for colors (argh, next week). Given the accent theme shift to black, going to have to be black so I should get started now.

Anybody out there put in a headrest? Rebuild or new?
Title: Re: 1980 K20 4x4
Post by: 1980K20 on June 06, 2021, 10:11:32 AM
Alright, truck came back yesterday!

Lots of pictures. Big thing the hood turned out to be flimsy junk, so they're ordering another one, will weld supports into it. So that's not painted.

Like how my built in workbench turned out. Made it from old 2x10 walls of the house stalks before the shop remodel.

Plan is to install parking brake, gas pedal, main brake before talking the steering column. Electrical starts after that.

Lots of room inside the front without the inner fenders.
Title: Re: 1980 K20 4x4
Post by: Mike81K10 on June 06, 2021, 06:55:43 PM
Looking really good!
Title: Re: 1980 K20 4x4
Post by: frotosride on June 06, 2021, 09:33:10 PM
I cringe Everytime I touch an older square body and see angle iron supporting the sides of the hoods.
Definitely, brace it up the right way before it becomes crinkled and chipped.

Looking great!!
Title: Re: 1980 K20 4x4
Post by: 1980K20 on June 07, 2021, 04:00:03 PM
Thanks mike81k10 and frotosride!

Mike, have you ever pulled the rear axles? I was going to replace the emergency brake cable and was wondering if I have to repack bearings. When you pull the axle, lots of what looks like a combo of axle grease and differential fluid comes out. If it just gets replenished with diff fluid, it seems not.

Thanks,
Mark
Title: Re: 1980 K20 4x4
Post by: 1980K20 on June 13, 2021, 07:49:52 PM
Alright, got some good time in this weekend.  Progress and issues.

Parking brake
- exhaust will fry the cable, mix more exhaust wrap, I suppose
- need still to replace one rear cable
- forgot to order the retention clips

Accelerator
- 2 of 3 bolts striped out
- kick down cable looks wrong, needs more work

Brakes
- mostly in, master cylinder bled

Transmission - leaking, Sigh. I tightened everything to torque, but some seemed loose. Tightened, hopefully it will do the job.

Steering column rubber gasket, found one, but back ordered.

Happy with the progress so far.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on June 19, 2021, 03:34:43 PM
Answering my question about rear end bearings.  Always an opportunity to do some research!

This truck has the "GM Corporate" 10.5", 14 bolt wheel over rear end. The axle comes out first and the wheel rolls on bearings on the axle. You remove two large axle nuts with a lock washer in between to remove the drum. The bearing and seal are mounted inside the drum.

The bearing is fully lubed from differential fluid. I suspect when I took my first from off, the thick sloppy grease was probably from packing when the bearings were replaced. There was maybe 50 miles on the new bearings.

I found a video where the guy rattled off the torque for everything. I didn't follow that procedure, so I'll need to retorque both drums. I don't have the shop manual that covers this diff, but haven't looked on the internet yet either.

Like mike81k10, I'm finding some sheet metal screws that are stripped. I'm finding shortages of posts, so will reuse more than I wanted to. I try to keep only three items going at once. I usually progress to the point where I need something, maybe paint, maybe a bolt. I move to the next thing until I can solve that and come back to it.

Title: Re: 1980 K20 4x4
Post by: Mike81K10 on June 19, 2021, 05:49:46 PM
 GM did not do well putting screws in thin sheet metal for the Accelerator peddle, the two fuse box screws, and such. I found the main problem with the screws is that of the thread. GM used course threaded screws in thin sheet metal when they should have been fine threads (many more per inch than they are). It has been a headache for me as well and I had to come up with solutions which normally meant a slightly larger bolt with fine threads than the OEM screw. I used a nut to endure it stays tight on both the accelerator and the Fuse Box.

You have done a great job so far and your engine looks really nice as well.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on July 07, 2021, 02:51:06 PM
Okay, back home from visiting the family for the 4th. Getting back going again.

I've got brakes, steering in. I then went to put the firewall insulation in. Looks like you normally put that in before putting the brakes and steering in. I've also got some insulating material from the store here.

Any suggestions for firewall?

Thanks!
Mark
Title: Re: 1980 K20 4x4
Post by: 1980K20 on July 12, 2021, 11:59:10 PM
Two steps forward, one step back...

Making good progress, steering and brakes are in. Ran into some issues.

- my hacked up exhaust pipe sits lower now and hits the emergency brake cable.

- this nice looking seam dealer the painter put on isn't working out. There are pictures somewhere back in the thread. I've been putting in sound barrier from the store. It wasn't adhering as it should to the dealer, probably because it's rough texture. Then the paint doesn't Adhere well to the sealer and the sealer isn't Adhering well to the cab. So I'm taking it off. The front part I can just peel off (not giving me confidence of something that lasts long term), but the back part is just a mess. Good news is I'll be able to continue installing firewall pad. The sound stuff sticks really well to the metal.

Hope to start installing electrical or radio or inside ac unit tomorrow

Mark
Title: Re: 1980 K20 4x4
Post by: 1980K20 on July 28, 2021, 10:15:11 PM
Working on electrical now. It's straightforward and confusing at the same time. I've got oldair ac, Dakota digital, Flaming river steering column and fob push button start. The safety switch mounting on the column wasn't right, but I plan to put in the position sensor and can use their setup instead.

I've got the harness on the bench, putting all the wires together in the right spots and holding with tape. Then I'll cut wires shorter for length to fit. Will post when I've got it mocked up and then put together.

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Title: Re: 1980 K20 4x4
Post by: 1980K20 on August 06, 2021, 07:55:36 PM
Making progress, but slowly. Working over one week on the dash harness. A bunch of new tools and supplies, so maybe the exterior harness will be faster.

I have a temporary work bench, my cuz built an extra shelf, we put up extra lighting and it rocks now!

Discovered the butt-end connectors with low temperature solder; they rock! See the wiring harness connection picture.

My cuz tried to put in the radio, discovered that the PO had cut the dash to install their radio. Sigh. Some sheet metal will fix it, but need the new bezel to align, which is back ordered and shipped out last night. (https://uploads.tapatalk-cdn.com/20210807/652fe4104e8b334cdd7619bd2ecb0bb3.jpg)(https://uploads.tapatalk-cdn.com/20210807/d974ebd680e90f798931b61bad634863.jpg)(https://uploads.tapatalk-cdn.com/20210807/8078ee3f4d88a460ac7767fa21d5d56a.jpg)

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Title: Re: 1980 K20 4x4
Post by: carmen77 on August 10, 2021, 06:24:16 PM
You are making excellent progress! Good for you!


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Title: Re: 1980 K20 4x4
Post by: 1980K20 on August 13, 2021, 08:42:07 PM
Thanks Carmen!

More good progress the past few days.

Instrument panel and radio are in and verified working. I'll make one small change, the accessory is only on when ignition is on, don't know what I was thinking.

Rfid push button start verified operation. Radio not turning on with accessory threw me off. It's a bit quirky operation, just requires a learning curve.

Ran engine harness, I don't like the corrugated look, so got some other look stuff, but don't like that either, so the harness is just put in place. Will order a weaved loom.

Taking my time with the philosophy that everything I put together will be removed and made better the second time. External connectors get both crimp and solder.

I also decided not to rely on chassis ground. In addition to the chassis grounding strap, I've run a 10 guage grounding wire to a grounded stud  where I also connected everything that needs a ground under the dash. I plan to do something similar for lights.

I'm the pictures, you'll see the dakota digital gear sending unit just hanging from below the dash.

Tomorrow is the day I start her up. Cross your fingers. (https://uploads.tapatalk-cdn.com/20210814/79b9715f5d3036638fdc3ba118c0ef22.jpg)(https://uploads.tapatalk-cdn.com/20210814/d93ceb3b2bef635bd2e1380931a3dc72.jpg)(https://uploads.tapatalk-cdn.com/20210814/74731583ed30b5b651d6c43827433d9e.jpg)(https://uploads.tapatalk-cdn.com/20210814/21364918cd968767f6f56eb7f02b5884.jpg)

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Title: Re: 1980 K20 4x4
Post by: JohnnyPopper on August 13, 2021, 08:57:48 PM
Nice work man!

Did you powder coat your frame? Looks like it where you have your grounding post.

If so, I don't know if the finish will insulate the frame from the post...
Title: Re: 1980 K20 4x4
Post by: 1980K20 on August 14, 2021, 12:40:21 AM
Nice work man!

Did you powder coat your frame? Looks like it where you have your grounding post.

If so, I don't know if the finish will insulate the frame from the post...
Thanks Johnny!

Yes, the frame is powder coated. I thought about sanding a little bit off, but the ohm meter reads 0.3 ohms to the transmission, which is multiple hops. Almost everything except directly touching the leads together measure 0.3 ohms. I suppose if the connection is really little, then it couldn't handle larger currents and will get bad. I might have put the dreaded star washer on the other side of the stud. The hole is threaded, I put a nut on the other side with washer before the connectors. I'll definitely sand the frame down where I have the stud at the gas tank. I'll run a clean line there too. Thanks for pointing it out!

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Title: Re: 1980 K20 4x4
Post by: Shifty on August 14, 2021, 10:01:53 AM
Nice work man!
Title: Re: 1980 K20 4x4
Post by: 1980K20 on August 14, 2021, 07:44:50 PM
Thanks Shifty!

Today I celebrated the new stereo by playing "Smoke on the Water", made in Japan version, a favorite of mine back in the eta of this truck. Woohoo, it's getting real!

Installed oil sending unit. Rube Goldberg style because things don't fit well.

Ran a stainless vent line from the gas tank to the engine compartment. I don't like gas smell, but sticking with the Holley vent. Will probably put a carbon canister in.

Verified the fuel pump operates like before.

Finished the day with a run to the auto parts store for hose clamps. Tomorrow is the day for a drive down to the dead end and back. A few odds and ends to finish first. (https://uploads.tapatalk-cdn.com/20210815/7b4325d3ff5b26b01b0c29b709da4fc0.jpg)(https://uploads.tapatalk-cdn.com/20210815/821557440ed48cf28570577fdbbbea2f.jpg)(https://uploads.tapatalk-cdn.com/20210815/fa1b7b589526b4ab90cf65e7fd2830c8.jpg)

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Title: Re: 1980 K20 4x4
Post by: 1980K20 on August 18, 2021, 08:57:25 AM
Got the truck running in the yard!

Lots of odds and ends.

Questions for you all!

1) my door light switches are too long. Any leads on finding ones with a shorter shank? It binds on the doors (aftermarket).

2) I put the gas vent up in the engine compartment. Seems risky. What do you think? Do I need to put a charcoal canister on it right away before driving for safety? I now have plugs on the unused firewall holes.

I used old boards for my seat. It was said to be something somebody's 7 year old would have built. Lol.

Here's the video.

https://youtu.be/U-HqOu3zwM0(https://uploads.tapatalk-cdn.com/20210818/5fc23408daae9381263a5931314dd39f.jpg)(https://uploads.tapatalk-cdn.com/20210818/e0052230308e7aee0b74a4f96457afb7.jpg)(https://uploads.tapatalk-cdn.com/20210818/87d0ff9a9670b87a12e83914f6e121e1.jpg)

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Title: Re: 1980 K20 4x4
Post by: Shifty on August 18, 2021, 09:29:11 AM
Holy cow!  That's more brass than a field of generals!   ;D

As far as the janb switch? I have not a clue, all squares use that same one....maybe move up to 88+, but it'll be metric, as well as a different connector.

At the very least, I'd move the fuel vent to behind the radiator core support, but yeah, I'd do a charcoal cannister, maybe hide it a bit since they are ugly as heck.
Title: Re: 1980 K20 4x4
Post by: carmen77 on August 18, 2021, 06:17:14 PM
I don’t see anything wrong with the seat….I like it




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Title: Re: 1980 K20 4x4
Post by: JohnnyPopper on August 18, 2021, 08:56:32 PM
Looks more stable than a milk crate for sure  ::)
Title: Re: 1980 K20 4x4
Post by: bd on August 19, 2021, 07:59:53 AM
(https://uploads.tapatalk-cdn.com/20210818/e0052230308e7aee0b74a4f96457afb7.jpg)

The annular sleeve labeled "Too long" in the image is designed to slide through the threaded nut when the door first closes, adjusting the switch plunger to the proper height.

Dependent on ambient temperature, ventilation, and sources of ignition (e.g., water heater, electric motors, open flames, sparks, etc.) when a carbon canister is absent, fuel odor can be obnoxious while flammable vapor accumulation within an enclosed garage can become hazardous.  Each situation is somewhat unique.

All you need to accompany that wood bench is a campfire and flask of Jack...   ;D
Title: Re: 1980 K20 4x4
Post by: bd on August 19, 2021, 09:33:05 AM
I should add, make sure the doors are installed and adjusted correctly before installing the new door jamb switches.
Title: Re: 1980 K20 4x4
Post by: Captkaos on August 19, 2021, 08:36:41 PM
Are you putting the tank vent under the hood for "water crossing"?
Title: Re: 1980 K20 4x4
Post by: 1980K20 on August 22, 2021, 09:30:50 AM
Thanks all!

I put the vent under the hood to get the level above that of the filter tube. I'll put in the carbon canister, good suggestion to relocate it.

Those stinking jam switches do not adjust. I tried to adjust in the bench with a Vise and a block of wood. Didn't budge. I then used a rubber mallets hit fairly hard and just dug a quarter inch hole into the wood and made the joint a bit wobbly. Maybe I need a different brand, have to look where I bought these. Passenger side threads are stripped (it wasn't my wrench, I swear!), another issue. They take 11mm wrench IIRC.

Truck is at the paint shop. Hood is on. Bed was scheduled to get paint yesterday.

Digging through box of parts for windows. I tried to buy in batches according to area I was working on, but my system broke down.

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Title: Re: 1980 K20 4x4
Post by: bd on August 22, 2021, 02:04:04 PM
Door jam switches (http://forum.73-87chevytrucks.com/smforum/index.php?topic=6686.msg36436#msg36436)

Stripped thread on door jamb switch (http://forum.73-87chevytrucks.com/smforum/index.php?topic=35457.msg302171#msg302171)
Title: Re: 1980 K20 4x4
Post by: 1980K20 on August 25, 2021, 09:38:50 PM
Thanks, BD for the leads!

The truck came home today with the paint done! Now it's up to me to finish. I'm very excited, it's got lots of giddyup and will be fun to drive. (https://uploads.tapatalk-cdn.com/20210826/856354810fa33d0bb66732482e8aac9e.jpg)

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Title: Re: 1980 K20 4x4
Post by: bd on August 26, 2021, 09:33:32 AM
Looks good.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on August 31, 2021, 11:32:24 PM
Thanks, BD!

Today's topic is parasitic currents. When the truck was at the painter, he said the battery kept running down. And this was only a week or so.

I tracked things down, couldn't find anything. I talked to the maker of the rfid, secure dawg, who sent me a link to a detailed manual. I was able to customize my settings. Now when you hit the start, it waits three seconds before hitting the solenoid to give the fuel pump some time to get up to pressure, yeah!  They gave some advice on parasitics. Nothing from starter or alternator either.

Nothing I found was out of the ordinary. I used a power cutoff to make a convenient way to hook up the current meter. 28.8 milliamps.  My 115 Ah reserve battery should last five months on that.

So I decided to make measurements over time.  Voltage on the battery.  It's dropping 0.05-0.07 volts per day. I started Saturday morning 12.87V and Tuesday night I am down to 12.57V. Another three days and I will hit the "discharged" level of 12.4V.  Maybe I've been draining it to much in my experiments and have weakened the battery.  Think I need to find my receipt...

Thoughts?


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Title: Re: 1980 K20 4x4
Post by: bd on September 01, 2021, 02:55:24 PM
A parasitic draw of 29 ma is negligible.  The battery may have a shorted cell.  If you have the luxury of time and don't have access to specialized diagnostic equipment, you can take a grassroots approach.  Charge the battery to its maximum recovery.  With the engine off, turn the high-beam headlights on for roughly fifteen minutes to remove the surface charge, then let the battery rest for about another fifteen minutes.  Measure and record the battery voltage to establish a reference point.  Disconnect the battery ground cable.  After 5-7 days, remeasure the battery voltage and compare the readings. 
Title: Re: 1980 K20 4x4
Post by: 1980K20 on September 02, 2021, 02:51:35 PM
Hey BD, I had a similar thought, had recharged the battery, let it sit a day with zero load and had a drop from 12.87v to 12.73v. I don't have headlights hooked up, put on ignition 8 minutes, let it rest and am at 12.69v.  Hope that was long enough. No need to turn electrical on until Saturday, so we'll let it sit a few days.

But I think I already know the answer that the battery has a problem.

Thanks,
Mark

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Title: Re: 1980 K20 4x4
Post by: 1980K20 on September 08, 2021, 05:30:55 PM
Ok, nearly a week has gone by and it's only dropped to 12.53V with no load. I think the battery is fine. Maybe not perfect, but good enough. There must've been something on that was draining it at the painter.

Thanks,
Mark

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Title: Re: 1980 K20 4x4
Post by: bd on September 08, 2021, 05:34:36 PM
Great.  Now reconnect it and see whether it will properly crank the engine.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on September 08, 2021, 11:19:47 PM
Cranked right up! So I'm keeping the battery hooked up, need to start it on occasion for my spasticity work. We'll see if that going parasitic load does anything, but I suspect not.

Thanks BD!

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Title: Re: 1980 K20 4x4
Post by: bd on September 09, 2021, 02:35:27 PM
Might benefit you to keep it connected to a battery minder while your project is in process.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on September 19, 2021, 08:07:37 PM
Ok, this weekend I finished the light wiring except for the trailer connector. Lots of fun, but I'm getting much closer.

1) led lights don't fit the fenders correctly. One front fender was exacerbated by the hole for the mounting was smaller than the other. I ground down the front side lights and had to do big grinding on rear light base.

2) forgot to put the fuel sending unit wire before attaching the bed. I partially stood the tank top attach. Good thing, though, the sending built was very close to the bed. After installing the tank, was able to drop it about 1/4" at the sending unit.

Still need to do on electrical...
- trailer connector. I have a connector in place to make that easy to install
- usb/cigarette lighter in cab
- Dakota digital can bus adapter to sniper EFI.
- Dakota digital gear position sensor
- flashers work but hazards don't and the fuse is okay. Something in the column switch probably.
- windshield wiper motor and washer
- reroute starter harness once I figure out what it should really look like. Lots of pics on the web, but not yet found one that shows how that harness is rooted.

The battery voltage with parasitic running was 12.37v after a week. Not great, but not running down. Now I've put my trickle charger on it. (https://uploads.tapatalk-cdn.com/20210920/576de5bc234dc3a1e19fc8beee5b0176.jpg)(https://uploads.tapatalk-cdn.com/20210920/946e063e8babfcb151de8ef5fe4f0d2d.jpg)

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Title: Re: 1980 K20 4x4
Post by: mrghostwalker on September 23, 2021, 12:45:01 PM
Nice paint job! What did that run you?
Title: Re: 1980 K20 4x4
Post by: 1980K20 on September 23, 2021, 09:58:16 PM
Thanks, too much. But now I know....

For everybody's reference, here are the quotes I'd gotten. All quotes were for typical work. Actuals are different as they get into it. This is body only, I did frame and mechanical myself.

1) neighborhood of $125,000, turn key outfit. They offer weekly zoom calls with your personal project manager. Ship it out rusty, it comes home finished.

2) $55,000 body parts dipped.

3) $35,000 body parts sand blasted. Last job, going out of business.

4) $7,000 orange peel paint included free of charge

My neighbor owns a body shop (insurance work only). and tried to find me somebody economical, ie $15,000. They're either no longer in the business, have a 1.5 year wait list, or declined due to too much rust.

My next truck will be done by myself even if it doesn't look as nice as this beauty.

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Title: Re: 1980 K20 4x4
Post by: 1980K20 on September 26, 2021, 09:31:10 PM
Finished the front headlights, installed the wiper motor (it works!), and one horn (2nd horn is defective). Not a lot, but I like finishing things. (https://uploads.tapatalk-cdn.com/20210927/eca8e0420b62919a59a90fe871aa2540.jpg)(https://uploads.tapatalk-cdn.com/20210927/7f16e24271d277e4528ca8aa860f88e1.jpg)

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Title: Re: 1980 K20 4x4
Post by: Shifty on September 27, 2021, 09:32:45 AM
Thanks for keeping us up!
Title: Re: 1980 K20 4x4
Post by: 1980K20 on October 24, 2021, 07:53:24 PM
Nearly done with throttle and kick down cables. Waiting for parts, turned attention today to the interior.

Insulating barrier (from this website online store) installed. I had a mess with the painter spraying seam sealer. That was scraped off but left behind a residue that doesn't always stick well. Turns out if you heat the sound proofing stuff just a bit, it gets more pliable and the stick sticks better. Fitted but didn't yet glue the jute in place.

The wiring is nearly 100%, but I've got some whiz bang stuff to add, will wait for that before posting the progress.

Mark
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Title: Re: 1980 K20 4x4
Post by: JohnnyPopper on October 24, 2021, 11:14:59 PM
Looks great man!

What's going down, carpet or pad?

What xfer case are you running?
Title: Re: 1980 K20 4x4
Post by: 1980K20 on October 24, 2021, 11:33:02 PM
Thanks, Johnny Popper!

It's got a TH350 and Np205. Both rebuilt. Tranny was in really bad shape, transfer case was fine. But you can shift the transfer case gears easily now. Engine is a built 350, 359hp, 400 ft-bs torque. If I tow something, I'll use low gear so I don't blow the tranny.

I'm putting in vinyl. Spent to much time as a kid getting dirt and sand out of dad's work car, he was a field man for the canning factory. I got a carpet cover for the back. Just ordered seat belts. Yikes, I must be getting close...

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Title: Re: 1980 K20 4x4
Post by: JohnnyPopper on October 25, 2021, 07:47:34 PM
Great drive train combo! I think I have xfer case envy now... ::)

Yeah, you're getting really close... ;)
Title: Re: 1980 K20 4x4
Post by: 1980K20 on October 25, 2021, 11:38:20 PM
Thanks! I asked the engine builder to keep the performance in check so I could run with regular gas. Roller cam was requirement. Since the original engine was long gone, got a '91 sbc with cast iron vortec heads. It feels ready to run, but haven't made it out of the driveway.

Thinking about calling a glass shop to install the windshield and rear glass. (should have gotten a' different year, easier to get glass). It was a bit of an ordeal to get the glass smoked instead of green, would hate to have a rookie moment. But those youtube videos make it look so easy.

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Title: Re: 1980 K20 4x4
Post by: JohnnyPopper on October 26, 2021, 11:47:53 AM
Yes, I agree about the glass, having had my own rookie moments.

I have the door glass out of the passenger side, thank God for youtube sometimes!

What did you do to get the windows 'smoked'? Tint prior to install? I will probably do that to my '80.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on October 26, 2021, 09:17:15 PM
The front and rear windows are smoked from factotry. Turns out the side windows for 1980 are different than other years in thickness, so the guy says I'll have to have tint applied, which means I'm unlikely to ever tint them. Search around on internet, you may find a better deal.

Place I got them from had some ordering issues but they resolved right away. It's a good shop, so custom hot rods . I received a small rear window for somebody else's truck and then a green tinted rear window. Not worth it to ship back. If you're in Washington, stop by for a window.

I'd fully dismantled, cleaned up one side vent window, then the electrical arrived - and I got distracted. I agree on the youtube videos, don't think I remember what I do with those rivets...

Neighbor and paint shop guys will both will have a good recommendation for a window shop. One less source of stress.

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Title: Re: 1980 K20 4x4
Post by: JohnnyPopper on October 26, 2021, 11:42:28 PM
Thanks for that!

Trying to understand smoked factory glass-front top band, or full tint? Rear is pretty clear.

Are there degrees of tint/smoke?

Side may not ever be tinted, but why? Scratching etc?
Title: Re: 1980 K20 4x4
Post by: 1980K20 on October 27, 2021, 11:18:50 PM
The front is dark band on top, clear on bottom. Rear is solid smoke, not super dark. I didn't think to ask about levels of darkness since I kept seeing chevy truck glass with just tint. This is so custom, I probably could have.

My experience with add on tint, including the windows coming out of the truck now, is that it turns purple over time and bubbles/curls. It's a mess. Maybe I've had the wrong installers, but it was even bad when I had my front house windows tinted when I lived in Texas. Maybe if I still lived in Texas, wow that sun was hot. Maybe that hot sun was the cause...

If I can get the dash installed this weekend, I was going to call the glass guy for next week, but shucks, forgot to order a new rear view mirror. These exchanges always bring out something if forgotten about!

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Title: Re: 1980 K20 4x4
Post by: 1980K20 on November 02, 2021, 11:52:24 PM
Thought I'd get the vinyl floor in. Cut back the jute around 4x4 stick. It makes sense to keep the jute under the shifter boot, but it seems that it would just capture moisture and that is new better cutting the jute back around the outside of the vinyl. But that could look wonky.

Thoughts? How did you do yours? (https://uploads.tapatalk-cdn.com/20211103/40852575462fbfde90c2da5ef055a5e8.jpg)

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Title: Re: 1980 K20 4x4
Post by: 1980K20 on November 03, 2021, 11:36:28 PM
Ok, I'm back, always asking questions, trying to learn before I do. Well, sometimes....

I've seen on the web that some don't even cut their jute back to the hole from my previous question. So I'm just sticking with it back at the hole.

Today's question is how far up the firewall to run the vinyl flooring. The flooring is too long. The only hint from the many instructional videos is to make it long enough to cover the paint. I'm keeping it long for the time being. I've put painters plastic over the truck, heated the vinyl an hour, it's 55F in the barn. It's been laying out on the floor for months. Wasn't enough time with the heater, I need that heater running for hours, but it got soft enough to get it mostly in.

But you can see there's the nice shiny sound barrier that runs up to the cardboard firewall cover. Where does one take the vinyl to?

Of yeah, my back ordered poly came in and I WA able to finish the work bench. To move to use, lol.

Thanks! (https://uploads.tapatalk-cdn.com/20211104/8e3fbd95fc72cbc3c9ed96cb11d20029.jpg)(https://uploads.tapatalk-cdn.com/20211104/3ba06be6c5262fcd5a68a298c7f3641c.jpg)(https://uploads.tapatalk-cdn.com/20211104/d76f0eb37fbeecaa58552c42156f2325.jpg)(https://uploads.tapatalk-cdn.com/20211104/1761ac4315020aad88f36fe37856c29d.jpg)

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Title: Re: 1980 K20 4x4
Post by: Shifty on November 04, 2021, 09:27:08 AM
Nice bench!  8)
Title: Re: 1980 K20 4x4
Post by: Mike81K10 on November 04, 2021, 11:20:57 AM
Nice Progress!
Title: Re: 1980 K20 4x4
Post by: frotosride on November 04, 2021, 09:47:08 PM
Nice bench!  8)

I really like the truck stuff but that BENCH!!! Doesn't look like it has seen a hammer. ⚒️
Title: Re: 1980 K20 4x4
Post by: Mike81K10 on November 04, 2021, 11:27:12 PM
Looks like a glass top and I don't think it could handle a hammer.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on November 05, 2021, 12:03:27 AM
Thanks!! I made this bench out of the old horse stalls pictures with the truck below after I closed up the barn and turned it into a proper shop.

I belt sanded, stained, decided it was too dark and did a light belt sanding to get the antique effect.

The glass top is polycarbonate, very though stuff, but I'm afraid to hit it with a hammer! (https://uploads.tapatalk-cdn.com/20211105/e7f43d4b2cd891a939017fbf67ed5b59.jpg)

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Title: Re: 1980 K20 4x4
Post by: Mike81K10 on November 06, 2021, 12:47:05 AM
It would be a good work bench.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on November 14, 2021, 01:29:37 AM
Thanks, Mike!

Big progress today... Windshield and rear window are in! Took the glass experts two hours with two guys to get it done.

Stinking antenna button came right off. Any tips appreciated, I haven't searched the forum just yet.

Read window tint isn't too dark and the windshield, the band doesn't go very low. Well, it looks good regardless. (https://uploads.tapatalk-cdn.com/20211114/ae392a803cb86b94d4e4bccd8979339e.jpg)(https://uploads.tapatalk-cdn.com/20211114/74eb27a26e544570f3d49a046a425df7.jpg)

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Title: Re: 1980 K20 4x4
Post by: frotosride on November 16, 2021, 01:10:57 PM
Now you can ditch the moto glasses...bugs in the face hurt at any speed...that's one of two reasons I wear a full face Helmet!
Title: Re: 1980 K20 4x4
Post by: 1980K20 on November 27, 2021, 09:58:54 PM
Now you can ditch the moto glasses...bugs in the face hurt at any speed...that's one of two reasons I wear a full face Helmet!
Funny! But if you're wearing a full face helmet, the nice cup holders will go to waste!

Headliner and seats are in today.  Guys coming over tomorrow to work on the hood adjustment.

Good leads on seat belts anyone? The ones I got are not like the original and won't work.

Brings down and signed up for vip sale. Now I don't have to edit my pictures before loading them... (https://uploads.tapatalk-cdn.com/20211128/9e3603741e56b3ccef0d4dfb70133c6f.jpg)(https://uploads.tapatalk-cdn.com/20211128/427bb5fba2662421d88d526f94b0d77a.jpg)(https://uploads.tapatalk-cdn.com/20211128/815bdf8c53068f4cf79f53562987fe42.jpg)

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Title: Re: 1980 K20 4x4
Post by: Shifty on November 29, 2021, 09:11:17 AM
Those chairs are sharp!  8)
Title: Re: 1980 K20 4x4
Post by: JohnnyPopper on November 29, 2021, 09:23:08 PM
She's going to be gorgeous!!!

Where did you source the seats?
Title: Re: 1980 K20 4x4
Post by: 1980K20 on November 30, 2021, 12:18:12 AM
Thanks guys! I really wanted head rest, cup holders and fabric. I could have rebuilt my bench, have the headrest welded in for less money, but these are nicer. Plus I have a bench seat for the shop.

http://www.cerullo.com
Cerullo Performance Seating

Mark
Title: Re: 1980 K20 4x4
Post by: frotosride on December 02, 2021, 01:47:34 PM
Checked out the website...home page looks too good for my wallet but the pic-a-part.. oh boy that fits me wallet for sure.

Nice bench and the cup holders are a very envied touch!
Title: Re: 1980 K20 4x4
Post by: JohnnyPopper on December 02, 2021, 04:39:11 PM
Froto I looked at the site, what are you referring to as 'pic-a-part'?
Title: Re: 1980 K20 4x4
Post by: 1980K20 on December 02, 2021, 10:06:34 PM
Froto I looked at the site, what are you referring to as 'pic-a-part'?
I think he's referring going to a yard for a new seat is much easier on the walker.

Thanks!

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Title: Re: 1980 K20 4x4
Post by: JohnnyPopper on December 03, 2021, 01:00:56 PM
HE'S ON A WALKER????
Title: Re: 1980 K20 4x4
Post by: 1980K20 on December 20, 2021, 01:08:48 AM
Big day today, Blue took her first drive on the road in the years!

Lots of links to work out, but she's running awesome! Have a look.

https://youtu.be/lTiFLkLPhu4

Mark

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Title: Re: 1980 K20 4x4
Post by: Mike81K10 on December 20, 2021, 08:47:59 PM
Congrats! I am getting much closer myself! However for the next couple of weeks I will not get much work done due to a niece on hospice and not expected to be around much longer. Your truck is looking good and sounded good as well.
Title: Re: 1980 K20 4x4
Post by: frotosride on December 20, 2021, 09:56:56 PM
Sorry to hear that Mike...no matter what part of the family, how old or young it's never easy! Already s not prayers for you and your family!

Froto I looked at the site, what are you referring to as 'pic-a-part'?
I think he's referring going to a yard for a new seat is much easier on the walker.

Thanks!

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Yes I was referring to the junkyard. Around here they are monopolized by corporate salvage companies. But 50% off engines, trans this week!
Title: Re: 1980 K20 4x4
Post by: 1980K20 on December 20, 2021, 11:22:14 PM
Congrats! I am getting much closer myself! However for the next couple of weeks I will not get much work done due to a niece on hospice and not expected to be around much longer. Your truck is looking good and sounded good as well.
Hi Mike,

So sorry to hear about your niece. Our prayers for you and your family.

Thanks much. Here's a tip, take the drive in full daylight. It seems much of my lighting stuff is off. Even a headlight adjuster popped off while we were just sitting there.

I canceled my backorder grille, ordered a '79 because it's black not gray. Hopefully it fits.

Mark

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Title: Re: 1980 K20 4x4
Post by: 1980K20 on January 02, 2022, 12:21:54 AM
I don't know that I'll get much done tomorrow, so here's w what I got done over the two week vacation. Pictures out of order...

1. Second drive!  to the gas station and around, calibrated speedometer
2. First haul! Friend indefinitely loaning me his cherry picker.
3. Epic failure on underhood lights. A short and the front ones falling off even though it should work according to data sheet. Well, power and fuses all in place.
4. Installed auxiliary 12V and USB. Plan to someday get one of those automotive air compressors.
5. Figured out not enough load on the led Taillights. New flasher on order and oscilloscope so I can measure the waveform.
6. Dash is ready to install, at last! Posts for the molding are too short, drilled holes and put in bolts to hold the vents, flipped the nuts upside down to hold the loulding.
7. Wrestled with seat positing.
8. Finished rebuilding one vent window! One down, one to go...
9. Insulated both doors, installed new latches. Closes with a solid this now. Sweet!
10. Ordering all the stuff I missed...
11. Lots of hikes in a rare big snow, family stuff, movies with the family

Happy new year!

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Title: Re: 1980 K20 4x4
Post by: VileZambonie on January 02, 2022, 06:18:55 PM
Nice progress
Title: Re: 1980 K20 4x4
Post by: 1980K20 on January 03, 2022, 10:42:21 AM
Thanks!

I realized I hadn't gotten any pictures with Blue in the snow... (https://uploads.tapatalk-cdn.com/20220103/d37cdce6db1a8f51e72d72929c745dc8.jpg)(https://uploads.tapatalk-cdn.com/20220103/957be39c1ad3343f4d9f13cc9458f594.jpg)

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Title: Re: 1980 K20 4x4
Post by: JohnnyPopper on January 03, 2022, 06:09:40 PM
SWEET! Nice ride!
Title: Re: 1980 K20 4x4
Post by: 1980K20 on January 05, 2022, 08:57:42 PM
Thanks Johnny!

I'm itching to install the grill, it's been stuck in shipping for two weeks but has made it to our region. Any day now!

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Title: Re: 1980 K20 4x4
Post by: 1980K20 on January 15, 2022, 10:57:13 PM
I promised I'd post results of the flasher study.  The United Pacific relay, 90652 without using the swap component, works without any fanfare, yeah!

The other relay had just what I expected, drops to around 3V instead of 0V.  I superimposed the two images together, attached.


Title: Re: 1980 K20 4x4
Post by: 1980K20 on January 23, 2022, 09:17:15 PM
Boxes from 3 years to the recycler. Cold ride, 38F no side windows, but the heat works. Only half the boxes were mine.

Finally got the window brackets in. Could not find pics on internet so here are some. They were a fourth inch too short on length. Probably the aftermarket doors, but these brackets are aftermarket too. Broke the captive nut off, used a 1" bolt on the mirror, nut on the door wall took up the extra gap.

Door locks in. Yeah the pawl are left /right specific so I put the first one in swapped of course. All done now.

Time to start installing the door windows.

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Title: Re: 1980 K20 4x4
Post by: 1980K20 on January 31, 2022, 08:18:36 AM
Glove box in. Too big for aftermarket ac unit, cut according to their template, riveted back in.

Lock came out easy with pick and youtube videos. (https://uploads.tapatalk-cdn.com/20220131/a4d7366d2c95554a5ebedf99bdd57a18.jpg)(https://uploads.tapatalk-cdn.com/20220131/02b1bc1c1d8720323f0df85565517f48.jpg)(https://uploads.tapatalk-cdn.com/20220131/e6baf1de893620144df7adec95330f5a.jpg)(https://uploads.tapatalk-cdn.com/20220131/5932099d731c7797a370a3ea34710fe4.jpg)(https://uploads.tapatalk-cdn.com/20220131/da0c8443a5466f9be414bf26c4104b04.jpg)

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Title: Re: 1980 K20 4x4
Post by: 1980K20 on January 31, 2022, 10:25:25 PM
Went to install the grille tonight. I've got six small square plastic clips. Of course only the two center positions holds the clips. It looks like the outer are very different, perhaps like these that are on backorder. I suppose a little sheet metal work and I'll be good to go, but geez.

Picture of the center support and the two side supports.

How do you attach your grille?

https://www.classicindustries.com/product/6271829.html(https://uploads.tapatalk-cdn.com/20220201/d0649a3eb87465f93f09135d848b2542.jpg)(https://uploads.tapatalk-cdn.com/20220201/3770f36bccaf6fcff6d54fe60af3cb7f.jpg)

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Title: Re: 1980 K20 4x4
Post by: Shifty on February 01, 2022, 08:12:45 AM
I did mine with zip-ties as a "temporary" fix, and I'll fix it when I get the time.  Of course that was 4 years ago, so...

 ;D
Title: Re: 1980 K20 4x4
Post by: 1980K20 on February 03, 2022, 05:56:15 AM
I did mine with zip-ties as a "temporary" fix, and I'll fix it when I get the time.  Of course that was 4 years ago, so...

 ;D
Lol, that was the previous solution. If I can get to the plastics store and get some nylon bars, I might get the router out and make something. We'll, that's involved. Maybe just hacksaw a slot.

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Title: Re: 1980 K20 4x4
Post by: 1980K20 on February 19, 2022, 12:43:31 PM
I HATE automatic transmission fluid. I think it smells like puke. Put my new gate on last week after picking up some plastic and creating my own brackets. Pictures included. I had to push back my transmission cooler bypass valve. Apparently I didn't have one hose on correctly and unbeknownst to me it popped loose.

I dumped a bunch of fluid on the garage floor and made a trail into the driveway. Corrected it, I hope.


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Title: Re: 1980 K20 4x4
Post by: VileZambonie on February 20, 2022, 04:04:24 PM
Being innovative. The grille hardware is this https://www.cjponyparts.com/amk-products-grille-hardware-chevrolet-gmc-truck-1973-1980/p/G24059/

but they probably won't as last as long as your brick  ;D
Title: Re: 1980 K20 4x4
Post by: Shifty on February 21, 2022, 08:11:32 AM
Fine use of improvising, adapting and overcoming.  :D
Title: Re: 1980 K20 4x4
Post by: 1980K20 on February 21, 2022, 09:00:58 AM
Thanks Villezombonie and Shifty!

I'm glad I went the plastic brick route. One side had had some damage and the proper clip would not work.

Now I have to make certain I won't pop the transmission cooler line again.

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Title: Re: 1980 K20 4x4
Post by: 1980K20 on February 27, 2022, 04:49:57 PM
Waiting for paint to dry on the passenger vent window, worked on door interior panel.

On the lower part of the door, there are three slots for plastic brackets. I can't for the life of me get these danged brackets installed. It seems that the door, with all this paint, is to thick. Or maybe it's the angle. Before I go rogue and build some brackets like I did for the grille, does anybody have suggestions? I've looked through a dozen videos, seems it's easy for everybody else.

It appears the brackets are 77-80. Who knows, maybe the aftermarket doors match a different year.

Thanks for your suggestions. Even if you have a picture of your door with brackets up close that would be helpful.

Mark (https://uploads.tapatalk-cdn.com/20220227/ae8bc079932f2fe985b8e561e477e9b7.jpg)(https://uploads.tapatalk-cdn.com/20220227/b8b587241b3239d34fd1f5d7579392c0.jpg)

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Title: Re: 1980 K20 4x4
Post by: VileZambonie on March 02, 2022, 05:38:51 PM
Take your trusty hacksaw blade and make the groove a little deeper. I've found that aftermarket doors and aftermarket clips often have incompatible tolerances and require modifications. I reuse the originals whenever possible.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on March 26, 2022, 09:03:18 PM
Thanks, I found that the slot stamps had extra ridges on some. I also got new square connectors instead of rectangular from classic industries. A little filling and they popped right in.

Both doors are now done! Passenger door works much better than drivers. Nice to drive today with windows in!

FYI I changed phones, can’t post pictures. I’ll figure it out eventually.


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Title: Re: 1980 K20 4x4
Post by: 1980K20 on March 27, 2022, 12:30:40 AM
(https://uploads.tapatalk-cdn.com/20220327/62bfb67f5190ae2a1d07050172d956c9.jpg)
(https://uploads.tapatalk-cdn.com/20220327/06fdfd42befd05635b5fe7f938946b18.jpg)
(https://uploads.tapatalk-cdn.com/20220327/4380964452c7f8f6d503b4ab9c67fc90.jpg)
(https://uploads.tapatalk-cdn.com/20220327/e45c78dbbbe6d5206976c5c4d5c67f2e.jpg)
(https://uploads.tapatalk-cdn.com/20220327/fdeb81bbc29b24d9ade098b9377cb9b5.jpg)


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Title: Re: 1980 K20 4x4
Post by: bd on March 27, 2022, 10:20:54 AM
Outstanding!  Beautiful job!!!
Title: Re: 1980 K20 4x4
Post by: VileZambonie on March 27, 2022, 06:35:52 PM
Great progress! Are you putting the side moldings back on?
Title: Re: 1980 K20 4x4
Post by: Shifty on March 28, 2022, 08:59:37 AM
Great progress! Are you putting the side moldings back on?
First thing that came to mind.  Looks fantastic brother!  8)
Title: Re: 1980 K20 4x4
Post by: Mike81K10 on March 28, 2022, 03:56:55 PM
Very nice head turner.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on March 29, 2022, 11:55:32 PM
Thanks all!

I’ve got door rain runner trim, but just the runner base that screws into the door, still need the chrome, back ordered and I haven’t had the time to search harder.

The one place I looked the cab trim that wraps the back is also on back order.

I’ve got runner boards to install next. If I’m lucky the pressure to take the 2” lift back to stock goes away. She just has to be able to get in the truck without a ladder. I like runner boards anyways.

The labels on the front fenders will be pretty much impossible to install with the original method of a nut in back.  Have to think about that more.


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Title: Re: 1980 K20 4x4
Post by: frotosride on April 03, 2022, 08:36:37 AM

The labels on the front fenders will be pretty much impossible to install with the original method of a nut in back.  Have to think about that more.


Use double sided 3M tape. It'll keep the paint safe and no holes to drill. Acetone is your friend on the back of the emblems.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on May 15, 2022, 08:27:48 PM

The labels on the front fenders will be pretty much impossible to install with the original method of a nut in back.  Have to think about that more.


Use double sided 3M tape. It'll keep the paint safe and no holes to drill. Acetone is your friend on the back of the emblems.
Thanks, I’ll do that!  I am thinking about repainting the yellow to matching blue. 


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Title: Re: 1980 K20 4x4
Post by: 1980K20 on May 15, 2022, 08:30:08 PM
I will replace my springs, a 2” lift, with stock lift springs.

Recommendations on high quality suppliers?  I want to avoid the quality issues out there.

Thanks!


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Title: Re: 1980 K20 4x4
Post by: 1980K20 on May 17, 2022, 12:43:44 AM
I was looking at Eaton Detroit springs.  Made in the USA.

They only have k10 springs.  And three load capacities for front and back.  If I used these springs, would the difference be that the truck isn’t 3/4 ton anymore, just 1/2 ton?  I don’t think I care. Will they fit?

I’ve got 2” rough country lifted in it now. I assume I need to replace the shocks too?


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Title: Re: 1980 K20 4x4
Post by: 1980K20 on June 05, 2022, 12:57:19 PM
(https://uploads.tapatalk-cdn.com/20220605/91d71aa5147b139bee4956c5ae1188bb.jpg)


Went to the local car show yesterday, not a great pic, but I parked next to another square body.  There was a 68 just down the row.

Go square bodies!


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Title: Re: 1980 K20 4x4
Post by: Shifty on June 06, 2022, 09:02:05 AM
Looks great brother. way to represent!  :D
Title: Re: 1980 K20 4x4
Post by: 1980K20 on June 06, 2022, 09:59:17 PM
Thanks, Shifty!


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Title: Re: 1980 K20 4x4
Post by: 1980K20 on June 06, 2022, 11:59:04 PM
Thanks, Shifty!


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Title: Re: 1980 K20 4x4
Post by: 1980K20 on June 20, 2022, 01:03:24 PM
Starting to use the truck like a truck. Light trailer use this weekend for a friends couch.

I must not have the parking brake set right, drove about 6 miles before realized it was on. Smoke coming out. Took off the brake, drove remaining two miles to my destination, everything was cool by then.  Do I assume I just screwed it all up and order new drums and pads for the inevitable rebuild?  It’s PIA taking the rear drums off, imo.

On my way back, began smelling gas. Some sort of leak developed at the tank. Hopefully I just screwed up the hose clamp but have to pull the gas tank to find out.  Got it home okay.

Not a good weekend, but at least I’m fixing the problems now.


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Title: Re: 1980 K20 4x4
Post by: Shifty on June 20, 2022, 03:46:13 PM
6 miles, you should be able to scuff them out...fingers crossed.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on June 26, 2022, 11:28:30 PM
Thanks, we’ll see.

I pulled the gas tank today, think it’s the brass fitting, maybe wrong style, will try some proper ones tomorrow.  I’ll get different clamps too.

Anybody know the proper glue to put in the threads?  I’ll ask at  the auto parts store when I get the new fittings.

Adjusted the parking brake cable while I was down there.  But I still need to pull the drums.

Thanks!
Mark

(https://uploads.tapatalk-cdn.com/20220627/a709d265912a79f9821383015428d521.jpg)


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Title: Re: 1980 K20 4x4
Post by: Shifty on June 27, 2022, 09:03:20 AM
Mark, you could use Permatex #1, the aviation sealant, or Indian Head shellac.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on June 27, 2022, 09:36:45 AM
Mark, you could use Permatex #1, the aviation sealant, or Indian Head shellac.
Hi Shifty, thanks. I look in the website No 1 is hardening, looks like the right stuff. When I search for “aviation”, I see No 3, non hardening, different stuff for horses.  I expect aviation is a general term.

Crossing my fingers nothing is cracked and it’s just using the wrong stuff.

Mark


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Title: Re: 1980 K20 4x4
Post by: bd on June 27, 2022, 11:06:12 AM
Have you actually verified from where fuel is leaking? 

Regarding the fuel pickup fittings, what type of threads are involved (e.g., NPT, inverted flare, AN)?  Unless the fittings are NPT, thread sealant shouldn't be necessary.  If they are NPT threads, they should seal using 2-3 wraps of yellow PTFE tape.  Is it possible that the fittings are incorrect for the pickup?
Title: Re: 1980 K20 4x4
Post by: Shifty on June 27, 2022, 01:33:16 PM
Sorry...it was the #3....but thinking on it further, I'd go with the Permatex high-temp thread sealant, since it looks like in your pic that you are using pipe thread fittings.
Title: Re: 1980 K20 4x4
Post by: JohnnyPopper on June 27, 2022, 06:38:22 PM
(https://uploads.tapatalk-cdn.com/20220605/91d71aa5147b139bee4956c5ae1188bb.jpg)


Went to the local car show yesterday, not a great pic, but I parked next to another square body.  There was a 68 just down the row.

Go square bodies!


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Looks great man! You should be on cloud 9, right?

The ONLY thing I would suggest would be to black out the components behind the grill... ;)
Title: Re: 1980 K20 4x4
Post by: 1980K20 on June 28, 2022, 12:50:47 AM
I used permatex no 1.  Application instructions says it works for this.  It said two hours to operational, 24 hours to cure. I waited 3, tested fora minute and no leaks. I don’t recall what I used before, but it was soft and blue. I think it was the aviation glue I found that recommendation, but specs says it stays soft. It’s been close to three years, hard to believe.

I replaced the clamps and the adapter too.

We’ll go for a drive tomorrow, probably 18 hours after.

Thanks for the suggestions and help! Let’s see if it holds.

Mark


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Title: Re: 1980 K20 4x4
Post by: 1980K20 on June 28, 2022, 08:31:57 AM
(https://uploads.tapatalk-cdn.com/20220605/91d71aa5147b139bee4956c5ae1188bb.jpg)


Went to the local car show yesterday, not a great pic, but I parked next to another square body.  There was a 68 just down the row.

Go square bodies!


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Looks great man! You should be on cloud 9, right?

The ONLY thing I would suggest would be to black out the components behind the grill... ;)
Thanks Johnny! I’m really looking forward to solid driving.  Kind of wish I’d done a different grille, haha if I paint the radiator behind it, hmmm I hadn’t thought of that!


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Title: Re: 1980 K20 4x4
Post by: Shifty on June 28, 2022, 09:10:53 AM
I dunno, the grill goes with the wheels....but yeah, I'd paint the radiator as well.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on June 29, 2022, 01:45:03 AM
Success!  Nice long drive today.

Next up is the AC unit. I’ve been watching YouTube, I’m dangerous!

I’m thinking about bringing the 2” lift back to stock.  The runner boards look like a big pain to install.  Put them on the list with the black paint.


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Title: Re: 1980 K20 4x4
Post by: 1980K20 on July 01, 2022, 12:08:29 AM
Alright, got my lines crimped and installed.

Got rental ac tools (brand new), gauges and vacuum pump.  Pump only brings gauges to -26 psi, should be closer to -30.  Don’t know if it’s pump or gauges.  Looking online, -26 has boiling point over 100F, which is too high to evacuate Vapor. But the pump steamed at first like it was pulling moisture out. Anyways…

Discovered that auto parts stores can no longer sell refrigerant in out state.  Can still mail order it.

System pumps to -26. Held overnight, no leaks!

Removed gauges, one valve leaks. Argh, need to replace that hose.  At least I know what I’m doing.


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Title: Re: 1980 K20 4x4
Post by: Shifty on July 01, 2022, 09:02:02 AM
Factory routing the hoses, or "hiding" them a bit?
Title: Re: 1980 K20 4x4
Post by: 1980K20 on July 02, 2022, 08:20:49 AM
I don’t like my hose routing. Suggestions?  I hid electrical in the fender. I need better pictures.(https://uploads.tapatalk-cdn.com/20220702/e2725b60f19a12709b4be18f8df7eb47.jpg)
(https://uploads.tapatalk-cdn.com/20220702/33bdc21d644c5685d3d8bfad8f10b47a.jpg)


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Title: Re: 1980 K20 4x4
Post by: Shifty on July 02, 2022, 01:00:42 PM
Can you follow the discharge line with your suction line, and route them closer to the block at least?
Title: Re: 1980 K20 4x4
Post by: 1980K20 on July 02, 2022, 02:13:00 PM
Can you follow the discharge line with your suction line, and route them closer to the block at least?
Considering my one line valve is defective, and your comments, it’s gotten me thinking about good routing. I see on summit reaching I can get bendable aluminum lines. It would be nice to run them along the frame.  I’ll go play, maybe come up with a design.

Thanks,
Mark


(https://uploads.tapatalk-cdn.com/20220702/65db8e6d3628d48ca486c9f8786a2edb.jpg)


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Title: Re: 1980 K20 4x4
Post by: Shifty on July 02, 2022, 03:20:17 PM
Since you're using a Sanden compressor, maybe you can turn it in the mount to point more advantageously. 
Title: Re: 1980 K20 4x4
Post by: 1980K20 on July 02, 2022, 11:55:04 PM
Since you're using a Sanden compressor, maybe you can turn it in the mount to point more advantageously.
I hadn’t even noticed that, you can rotate quarter turns!  Doesn’t help me unfortunately with the compressor way up over the engine.  Bummer.

Had a good long look at it. Two hoses are too long, thankfully one which needs the fitting replaced.  If I shorten those two up, that helps a lot.  The suction hose is bad angle of the compressor to allow access to the high pressure fitting.  So I can rebuild the high pressure side, put the service port up by the firewall and use a 45 degree at the compressor to get those houses nicely moved around.

I also noticed pressure on the heater hose, can get a long nozzle and take the pressure off the hose.

Will double and triple check before ordering parts.

Mark


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Title: Re: 1980 K20 4x4
Post by: Shifty on July 04, 2022, 10:43:46 AM
Most excellent Mark! 
Title: Re: 1980 K20 4x4
Post by: Mike81K10 on July 04, 2022, 08:56:03 PM
Your truck has come a long way and looks nice.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on July 06, 2022, 12:44:39 AM
Thanks all!  Summit racing rocks, parts on the way.

Mail


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Title: Re: 1980 K20 4x4
Post by: 1980K20 on July 11, 2022, 12:06:19 AM
In my quest to find a hose, I was introduced to a guy who does house calls for car a/c. He’s a fellow car guy with a lot of interesting toys.

He taught me how to run lines in parallel and line them up nicely with two zip ties.

The truck runs cold air!!  I just need to reattach the lines in the cab. I wonder if the glove box hits them and knocks them off. I thought I had them zip tied.  Need to redo the heater hoses too.

Anyways, big task complete.
(https://uploads.tapatalk-cdn.com/20220711/09c8551ce3d1d8baaf979b902abb1f51.jpg)
(https://uploads.tapatalk-cdn.com/20220711/8e7625a38ae1c50f7ff244f04f3f8060.jpg)


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Title: Re: 1980 K20 4x4
Post by: Shifty on July 11, 2022, 09:15:56 AM
Looking good bro!  8)
Title: Re: 1980 K20 4x4
Post by: 1980K20 on July 13, 2022, 12:30:07 AM
Thanks, Shifty!


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Title: Re: 1980 K20 4x4
Post by: VileZambonie on July 13, 2022, 07:41:38 AM
I bought an assortment of beadlock fittings, hoses and the crimping tool. Nothing beats being able to make your own hoses the way you want them.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on July 21, 2022, 12:11:43 AM
Interior is almost 100%.  For some reason I only zip tied half the ac hoses and they popped off.  Got the door rain rails on and the trim around back off t the cab on.  Alright, I’m the dry now.

Drivers side vent window is horrible, But the Drivers side window sticks out, doesn’t line up with the guide.  I put three washers on the bottom two bolts to help it. Will try the upper bolts this weekend.  The guide is all loose.

Anyways, anybody have this type of trouble?(https://uploads.tapatalk-cdn.com/20220721/d58f005bb72a6d87b63de2aa9b4b2724.jpg)
(https://uploads.tapatalk-cdn.com/20220721/9450b0548b97c78b14891046fc7f5bf8.jpg)


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Title: Re: 1980 K20 4x4
Post by: Shifty on July 21, 2022, 09:14:44 AM
I'm still fighting my wing vents, I feel your pain.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on July 22, 2022, 12:53:23 AM
Hear yea Shifty, no wonder these vents are a thing of the past.

I saw online the other day that passenger vent window assembly was no longer back ordered, but not the drivers side.  Both are back ordered again.


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Title: Re: 1980 K20 4x4
Post by: 1980K20 on July 27, 2022, 12:57:07 AM
Shims on three washers on the window crank helped get the alignment better.  The crank is super loose and floppy. I’ll probably put the original back in since I have new rollers to fix it.  The original is really stiff.  I replaced it because it was slipping gears, but cleaning it up it seems to work fine now.

The extra issue is the door trim.  The drivers side measures from the window to the inside edge 1/4” further than the passenger side. Passenger side fits nice and snug against the door. Drivers side sticks out 1/4”.  I had pushed it in, discovered that the extra pressure puts the window out of alignment.  I’ve got it sticking back out again and window works okay now.  Sigh, maybe I should have sprung for the expensive trim.  Oh well I’ll fix it eventually, good enough for now!


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Title: Re: 1980 K20 4x4
Post by: 1980K20 on October 24, 2022, 09:54:07 AM
Replacing the leaf springs to bring her back to stock height. Bilstein shocks, they seem like they should be longer, but that’s stock size for the truck apparently.

Drivers side done, passenger side remaining. Happy with the new height so far.

Discovered passenger front shock, Rough Country, was bad.  I’m sure that has something to do with the poor handling.  Geez, only 700 miles…


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Title: Re: 1980 K20 4x4
Post by: Geezer77GMC on October 24, 2022, 04:09:29 PM
About 25 years ago I noticed the new rear shocks that were supposed to fit my 77 were too short for what I need. The Geezer came with 9 leafs in the rear, 5 in the front. When I drove over a hump in the road the rear shocks limited upward suspension travel causing the rear to lift off the road, very rough ride when empty. I rotated the rear shock mounts on the axle for 2-3 more inch travel upward. The ride is still very stiff when unloaded, but doesn't beat you nearly as much going over humps in the road. It also handles much better with the rear tires on the pavement.
Title: Re: 1980 K20 4x4
Post by: 1980K20 on November 04, 2022, 11:31:11 PM
About 25 years ago I noticed the new rear shocks that were supposed to fit my 77 were too short for what I need. The Geezer came with 9 leafs in the rear, 5 in the front. When I drove over a hump in the road the rear shocks limited upward suspension travel causing the rear to lift off the road, very rough ride when empty. I rotated the rear shock mounts on the axle for 2-3 more inch travel upward. The ride is still very stiff when unloaded, but doesn't beat you nearly as much going over humps in the road. It also handles much better with the rear tires on the pavement.
So far so good. I think the drive train vibration that happened at highway speed is gone with the stock lift also. It drives really nice now.

Transmission shop removed the temperature bypass valve in front of the front cooler that I had put in and cleaned up the hoses big time. The TH350 doesn’t need it.

About two hours work away from moving onto more cleanup stuff. Not really much left, woohoo!


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Title: Re: 1980 K20 4x4
Post by: JohnnyPopper on November 05, 2022, 10:03:03 PM
Nice to see a project come in to the space where the owner envisioned... 8)

Just found out that my K10 Short bed step side was fitted for a camper spring option from the factory.  ;) ;) ;)

Wonder if that contributes to the 'stiff' ride...? 

There is pry a spec sheet on how many leaf springs should be there... :)