Author Topic: Which 350?  (Read 508 times)

Online Ronno6

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Re: Which 350?
« Reply #15 on: October 09, 2018, 10:33:49 AM »
There are aftermarket 350 crate engines that have 1 piece RMS, Vortec heads, and provision for mechanical fuel pump.  I know there are a couple from Blueprint, and probably ATK has similar configurations.  However, buying a complete new crate engine puts you in the $2200-2600 range, and it sounds like you are on a relatively tight budget.

This engine has everything you want, plus a roller cam, and they will dyno it to verify its 373 horsepower. https://blueprintengines.com/collections/gm-compatible-small-block-crate-engines/products/gm-350-with-vortec-heads-roller-cam-1pc-rms
Just drop it in and go.

Bruce

Thanks, Bruce.
My budget restrictions are somewhat self-imposed. Just trying to prevent things from getting out of hand.......
That Blueprint engine looks interesting...I may have to consider it.

For the time being, I may just do a cam,intake and headers on the 305 and see what comes of it all.
As it should have 9.5:1 compression, it may all work out.
Valve job w/1.94 upgrade would cost about $225.00 + gaskets. I may do that also...not sure.
I was told that porting and polishing helps more at higher RPMs than I may turn, so probably won't go there.
You can lead a man to water, but yoiu can't keep him from pissing in it.

Online Stewart G Griffin

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Re: Which 350?
« Reply #16 on: October 10, 2018, 12:40:23 PM »
Well, the jig is like $600.............

This all depends on what you want out of the engine whether to stick with the 305 or go 350........

Online Ronno6

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Re: Which 350?
« Reply #17 on: October 10, 2018, 04:14:56 PM »
Well, the jig is like $600.............

This all depends on what you want out of the engine whether to stick with the 305 or go 350........

If I stick with the 305, mechanical FP mounting is moot as it is already there.
Just that I am finding many Vortec motors for sale without that provision.
You can lead a man to water, but yoiu can't keep him from pissing in it.

Offline Irish_Alley

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Re: Which 350?
« Reply #18 on: October 10, 2018, 09:50:39 PM »
Might be more beneficial to just add an electric pump and be done. What is your budget for this engine? If you plan on more power later on I don't see the point in sinking more money into the 305 now
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline fitz

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Re: Which 350?
« Reply #19 on: October 11, 2018, 06:08:18 AM »
Might be more beneficial to just add an electric pump and be done. What is your budget for this engine? If you plan on more power later on I don't see the point in sinking more money into the 305 now

  Like Irish said, it might be worth it to add an electric fuel pump and call it a day.
  I have a 1998 vortec 350 in my 69 camaro.  It has the GM performance parts aluminum 4 barrel mannifold with an edlebrock 600 carb with a Holley electric fuel pump. It runs great. 
  My motor was rebuilt at a local machine shop but  You can get the vortec 350 from Jegs for $1900
« Last Edit: October 11, 2018, 06:13:23 AM by fitz »

Online Ronno6

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Re: Which 350?
« Reply #20 on: October 11, 2018, 08:33:14 AM »
Might be more beneficial to just add an electric pump and be done. What is your budget for this engine? If you plan on more power later on I don't see the point in sinking more money into the 305 now

I tend to employ circular logic in these types of situations.
The most complicated choice I think I ever made was which 10 speed bicycle to buy........

I ran across a deal for a 350 +.060 4 bolt w/Pro Topline 1.94 heads and Comp cam kit,
roller rockers, and a whole host of other stuff for $1600.00 needing assembly and maybe a cam polish and intake.
But it is a 2pc rear main, and I would need a new flywheel.
Sounds good, but.....then the old circle logic comes about again.

I have Hedman 1 5/8" long tube headers, and 2 1/4" exhaust and mufflers.
Fine for the 305, but probably a bit constrictive for a healthy 350.
As pointed out earlier, should I proceed with the 305, intake and cam would be usable on a 350 if I get
compatible setup.
Only thing I'd be tossing would be headwork and gaskets.(and exhaust?)
I probably wouldn't want to do the other stuff without reworking heads ($225.00 for 1.94 upgrade.)
That wouldn't be giving the 305 a fair shot.
And 300hp would probably satisfy me........ most I've ever had under foot is my 97 F150 5.4 @220.
With a Muncie M20 (2.52 first gear) and 3.73 in the rear, I would have to believe it would pretty lively.

I should probably run a compression test first on the critter tho............

My budget can be whatever I want it to be, but, with bodywork/paint, suspension and interior yet to go,
I had better rein in my engine desires.............
You can lead a man to water, but yoiu can't keep him from pissing in it.

Offline Irish_Alley

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Re: Which 350?
« Reply #21 on: October 11, 2018, 01:12:28 PM »
Since you say 2.25 exhaust and mufflers I'm taking it as you have true duals? If so they'll be good for the 350 as that size dual pipes can handle 375. Single can only handle 187
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Online Ronno6

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Re: Which 350?
« Reply #22 on: October 11, 2018, 05:52:02 PM »
Since you say 2.25 exhaust and mufflers I'm taking it as you have true duals? If so they'll be good for the 350 as that size dual pipes can handle 375. Single can only handle 187

Yup. True duals...

Thanks!
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Online Stewart G Griffin

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Re: Which 350?
« Reply #23 on: October 11, 2018, 07:37:48 PM »
Lately, i've got a hankering to rebuild the 305 that was overheated and sitting in my garage.  (i have a penchant for small engines.....)

---port the heads myself-----because no one, apparently, wants to touch 305 heads, possibly for good reason......? ::)   So, why not try it----what is there to lose?

---Slightly deck the heads----to increase compression.

--- good roller cam.  Want lower to mid rpm though

---edlebrock performer rpm intake

---good headers and dual exhaust

And see what happens, in a 3/4 suburban.

Online Stewart G Griffin

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Re: Which 350?
« Reply #24 on: October 12, 2018, 02:57:31 PM »
i meant milling the heads.

Offline VileZambonie

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Re: Which 350?
« Reply #25 on: October 12, 2018, 09:14:20 PM »
Most people find value in time well spent and money well spent. Neither can be said for the 305 when it comes to doing upgrades. If you are maintaining a perfectly good 305, no harm no foul but when upgrading, it's lipstick on a pig. We've all heard the big fish little pond stories...no need to repeat them. It's like buying a Harley and getting a Sportster. We're all big boys now, bite the bullet and be happy, you only live once.
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Online Ronno6

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Re: Which 350?
« Reply #26 on: October 14, 2018, 09:31:19 AM »
Most people find value in time well spent and money well spent. Neither can be said for the 305 when it comes to doing upgrades. If you are maintaining a perfectly good 305, no harm no foul but when upgrading, it's lipstick on a pig. We've all heard the big fish little pond stories...no need to repeat them. It's like buying a Harley and getting a Sportster. We're all big boys now, bite the bullet and be happy, you only live once.

It appears at this time that I have found a decent deal on a 350.
4bolt 2 piece rear main (bummer..I'll need a new flywheel..) bored .060 over.
stock pistons/rods
Comp Cams K12-238-2 flat tappet cam kit
Comp Cams roller rockers
Pro Topline heads 1.94/1.50 64cc chamber heads 7/16" studs
Distributor, carb (unknown, but I think Ed. performer)
+ most stuff needed to assemble, but no intake.

Should be a bit on the scary side for me, but I'll learn to control it....
You can lead a man to water, but yoiu can't keep him from pissing in it.

Offline VileZambonie

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Re: Which 350?
« Reply #27 on: October 14, 2018, 06:35:21 PM »
Nothing scary about that although a .060 350 means it's seen its life of agony and has either been seasoned well or is a toaster. A .060 over block cannot have stock pistons. If that thing is falling into your lap for dirt cheap and you've seen and heard it run, fine otherwise you may want to find another foundation to build upon.
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Online Ronno6

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Re: Which 350?
« Reply #28 on: October 22, 2018, 08:44:48 AM »
OK, The purchase has been made.
Block casting # 10243880
It is an 880 block.typically shown to be a roller block.
The engine came out of a '93 GMC 1500, but most sites list this block as
being used from 95 to 2000, but other sites sat from 87 to ???
Date code A307 so, 1997 ?? 1987 ??
Most say either L31 Vortec or ZZ4 crate motor.
I have seen it listed as being used in a few 95 trucks w/TBI.
My motor has TBI and swirl port heads.
Unsure if 2 bolt or 4 as of yet, and do not yet know if roller cam.

The mechanical fuel pump mounting site has a plate w/4 attaching bolts,
so here's hoping it is mechanical fuel pump ready.

For now, I have to get it out of the back of my truck, pressure wash and put on the stand.
Then the fun will commence.............
You can lead a man to water, but yoiu can't keep him from pissing in it.

Online Stewart G Griffin

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Re: Which 350?
« Reply #29 on: Today at 10:20:29 AM »
Discuss "circular logic."