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Author Topic: Guess the sound  (Read 28030 times)

Offline Chisholmcody

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Re: Guess the sound
« Reply #45 on: May 28, 2015, 01:08:34 pm »
Ended up doing it today

It does have the plastic cam gear and that is what broke




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Offline LTZ C20

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Re: Guess the sound
« Reply #46 on: May 28, 2015, 01:50:56 pm »
Oh that's no bueno. Sorry to see that. The plastic gear definitely wasn't a good idea.
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LTZ Cheyenne C20

Offline Chisholmcody

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Re: Guess the sound
« Reply #47 on: May 28, 2015, 01:59:55 pm »
No not at all lol
As for pulling off the old gear do I just heat it up and pry it off or is there some sort of puller

And for installing the new one can I just hit it with a deadblow?


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Offline LTZ C20

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Re: Guess the sound
« Reply #48 on: May 28, 2015, 02:33:20 pm »
No idea, never had to work on one. But based on the the picture, it appears to be installed like a crank sprocket. My guess would be a 2-jaw puller grabs the back side thru those 2 large holes, then just twist it off. Install would be with an installer tool, line up the keyway and twist it on. That's all just goin off the picture and a general idea of how GM intended it to be done.
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Offline bd

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Re: Guess the sound
« Reply #49 on: May 28, 2015, 04:40:38 pm »
See page 6A-1-19, "Gear Replacement," in the 1978 Service Manual.  The gear is pressed off and pressed on with the camshaft properly supported.  Do NOT use a hammer; otherwise, you run a high risk of damaging the camshaft and gear!  Better to have a shop swap the gears for you.
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Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)

Offline Chisholmcody

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Re: Guess the sound
« Reply #50 on: May 28, 2015, 07:34:43 pm »
Thanks!
If I go the 350 route what all do I have to upgrade?



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Offline enaberif

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Re: Guess the sound
« Reply #51 on: May 29, 2015, 10:38:27 am »
Quote from: LTZ C20 on May 28, 2015, 01:50:56 pm
Oh that's no bueno. Sorry to see that. The plastic gear definitely wasn't a good idea.

Even a stock 305/350 uses a nylon cam shaft gear for the earlier trucks and only get swapped out when they get replaced due to breakage. Mine was UGLY.
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Offline LTZ C20

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Re: Guess the sound
« Reply #52 on: May 29, 2015, 01:34:26 pm »
I know. Just bad idea in general.
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Offline Chisholmcody

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Re: Guess the sound
« Reply #53 on: May 29, 2015, 05:14:28 pm »
So I pulled the grill and radiator in hopes to have enough room to pull the cam. Looks like I might!

Also I got all of the push rods out and labeled for re installation. As for the lifters what is the best way to keep them in place for when I pull the cam? And should I pull the fuel pump?


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Offline Irish_Alley

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Re: Guess the sound
« Reply #54 on: May 29, 2015, 05:25:09 pm »
never seen someone remove the cam and keep the lifters in place. then again i never seen nor have i done it on a inline. take pictures if you can please
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Offline bd

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Re: Guess the sound
« Reply #55 on: May 29, 2015, 05:51:55 pm »
Quote from: Chisholmcody on May 29, 2015, 05:14:28 pm
So I pulled the grill and radiator in hopes to have enough room to pull the cam. Looks like I might!

Also I got all of the push rods out and labeled for re installation. As for the lifters what is the best way to keep them in place for when I pull the cam? And should I pull the fuel pump?

    ???

Chisholmcody...

Did you take the time to read the service manual linked above?  The answers to all of your questions are contained therein.  Here's an excerpt...

[Camshaft] Removal
1. Remove engine, following procedure on page 6A-40
of this section.
2. Remove lifters as previously outlined.
3. Remove crankcase front cover as previously
outlined.
4. Remove fuel pump.
5. Align timing gear marks then remove the two
camshaft thrust plate bolts by working through holes in
camshaft gear.
6. Remove the camshaft and gear assembly by pulling
it out through the front of the block.
NOTE: Support camshaft carefully when removing so
as not to damage the camshaft bearings.

If you have questions after reading the provided instruction manual,   ...feel free to ask away....   :P

    ;D
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Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)

Offline Chisholmcody

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Re: Guess the sound
« Reply #56 on: May 29, 2015, 11:54:15 pm »
just got done reading it (should have done that first). I also talked to my dads mechanic and he was saying I can use a dowel to hole the lifters in place. Or even drop the telescoping pen magnets (http://www.oreillyauto.com/site/c/detail/PFM0/20126/N0722.oap?ck=Search_N0722_-1_3550&pt=N0722&ppt=C0374) down were the push rods went and bend the tabs were it slips on your shirt to hold it on top of the head and hold up the lifters that way? Can anyone confirm this?
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Offline Chisholmcody

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Re: Guess the sound
« Reply #57 on: June 24, 2015, 10:58:22 pm »
So I have gotten everything back together with out a catch except for this one push rod cover on my motor (l6 250)

Every time I have put it on the gasket seems to push out of the bottom of the cover and is causing a leak. I have been using the right stuff (rtv) to try and help hold it and it's still slipping out the bottom. Any recommendations on how to get it to stay?


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Offline bd

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Re: Guess the sound
« Reply #58 on: June 24, 2015, 11:09:45 pm »
Until it cures, the silicone sealer is acting like a super lubricant, causing the gasket to shift.  On the block side gaskets, try substituting Permatex High Tack or Super High Tack for the RTV.
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Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)

Offline Chisholmcody

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Re: Guess the sound
« Reply #59 on: June 24, 2015, 11:19:08 pm »
With the high tack or super high tack do I put it on both sides or just on the surface of the cover?
 
And do I put the rtv on the other side or leave it bare or even use the high tack on that side to ?


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