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Username Post: 350 engines        (Topic#340857)
Wrooker3 
Forum Newbie
Posts: 4

Age: 24
Loc: NC
Reg: 06-29-16
11-25-16 08:25 PM - Post#2663153    

Every once in awhile i have been on craigs looking for a 5.7 block because I want to build a 383 to put in my 89 Camaro, because who wants a 305 (amiright? lol).

Today at work (car dealership) a guy in parts told me that he has an old 350 he pulled out of a '72 El Camino ages ago and has just been sitting and has been on craigs for awhile. Thinking about getting it, and another older technician told me that it won't work in my car. He said that around 86, they moved the engine mounts forward a little to give it a lower profile in cars. I trust what this guy says, he has been in the industry for something like 40 years, and know his stuff, but i cant fine ANYTHING on the internet backing up what he says.

can anyone give me more insight or back up what he is telling me???

1979 El Camino with a 5.7. Bored, Headers, and full exhaust.
1989 RS Camaro. Beater with a 5.0. Needs a 383 along with just about everything else.

Code:

 https://i.imgur.com/zezkaOU.jpg 





 




raycow 
DECEASED
Posts: 27999
raycow
Loc: San Francisco, CA
Reg: 11-26-02
11-26-16 10:06 PM - Post#2663339    
    In response to Wrooker3

The mount holes are in the same place on every SB from 58 up until the LS started. Even that isn't necessarily a deal breaker because adapter plates are available to use the earlier mounts on LS blocks (not the reverse, though).

The main change of note in 86 was the one-piece rear seal, which means the crank flange bolt pattern is different. In other words, you will need a different flywheel or flexplate if you are using an earlier engine to replace your 89.

There are also other issues you may want to take into account. For example, the heads changed in 87 on the intake side, which means your FI won't bolt to the 72 heads. If you are ok with running a carb instead, you shouldn't have a problem.

Ray

Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.


 
Wrooker3 
Forum Newbie
Posts: 4

Age: 24
Loc: NC
Reg: 06-29-16
11-27-16 05:43 PM - Post#2663476    
    In response to raycow

Thanks for your response! I talked to a couple other guys at work on Saturday and they said that Chevy man have moved in engine forward, but using the mounts on my car would work, they just moved it forward on the car.

Been debating between EFI and carb. Also been debating between just buying a crate engine or building my own, leaning toward building my own carbureted engine, even though I don't know the first think abt a carburetor hahaha

1979 El Camino with a 5.7. Bored, Headers, and full exhaust.
1989 RS Camaro. Beater with a 5.0. Needs a 383 along with just about everything else.

Code:

 https://i.imgur.com/zezkaOU.jpg 





 
raycow 
DECEASED
Posts: 27999
raycow
Loc: San Francisco, CA
Reg: 11-26-02
11-30-16 05:51 PM - Post#2663996    
    In response to Wrooker3

  • Wrooker3 Said:
Been debating between EFI and carb. Also been debating between just buying a crate engine or building my own, leaning toward building my own carbureted engine, even though I don't know the first think abt a carburetor hahaha


It looks like you and I are pretty much opposites in that regard. If something goes wrong with a carb, I can usually fix it. If an EFI goes wonky on me, I am clueless.

For that reason, when I swapped an 87 engine (with EFI) into my truck, I replaced the heads with a pair of earlier ones so I could bolt on a 4 barrel manifold, and it is still running fine on the carb 15 years later.

However, if you are good with EFI, then go for it. I would be the first to agree that EFI is definitely better in the long run.

Ray

Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.


 
Stinky 
Senior Member
Posts: 1664

Loc: Whitewater, CO
Reg: 05-25-01
12-22-16 08:44 AM - Post#2667274    
    In response to raycow

I know that this is a bit old...but you are assuming that ur tbi-305 heads won't work on the 383. I'd check the casting numbers. (Btw, I ain't saying they will, cuz they probably wont.)

Next, you can put a throttle body on a 4bbl manifold, or maybe on a 2bbl manifold (I think that Ebrock makes em). They make adapters fer dat...I do t know who does, but I have one.

I wouldn't go away from the tbi...also, illegal to do dat.



Edited by Stinky on 12-22-16 08:46 AM. Reason for edit: No reason given.

 




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