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Old 03-27-2007, 11:07 PM
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Chevy engine questions

Hey fellows, I'm new to chevy engines(I have SOME experience with Olds engines), I have a few questions to ask:

I've recently purchased a 84-85 chevy caprice cheap but it needs an engine.
It currently has a chevy 307 in it and I want to swap out the 307 and replace it with a 350. I saw a short block that summit racing sells for 695.00 that seems like a good starting point to me but I have a few questions

1. Since the car has a computer in it, I'm going to guess that the 307 is of the low compression kind(8.0---8.6:1 comp ratio) so what heads would I need to get if I'm planning on keeping the comp ratio in that range, use the 307's intake, carb and exhaust manifolds?

2. will all of the brackets from the 397 work on the 350? ac, smog pump, etc.......

3. if not, what other options can I use?

4. If I disconnect the computer and use an Edelbrock carb will the factory alt, oil pressure, eng temp lights still work?

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Old 03-28-2007, 12:58 AM
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I think you were looking at a bare block, not an assembled short block. The cheapest one is $1300.

It has dished pistons. When combined with 76cc cylinder heads it will have a8.5:1 cr. (approx).
Are you sure the motor in the Caprice is a Chev motor?
All the chev 307's are very old.
GM did install a "corporate 307" in those cars among others.
Its a Olds motor.
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Old 03-28-2007, 11:30 AM
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engine help

I think it's a chevy engine, I have a 84' Olds w/307(it sucks) and it doesn't look anything like it........
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Old 03-28-2007, 01:32 PM
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Which ever 350 you go with will bolt up and work fine.
I'd go with the Edelbrock carb and a performer intake to match.
The AIR (smog) pump can be tossed and plugs put in where the AIR tubes in the exhaust manifolds are.
The Coolant/oil/Alt gauges will work if you re-install the sending units back in the 350 block. Buy a new 350 flexplate. .there only 35.00 or so. and a 350 ballancer.
The 307/305 in stock forum from the manufacture were not impressive lol.
Sounds like a winner!
~Scott
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Old 03-29-2007, 11:06 AM
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Me and a bunch of chevy guys are having a meet in Alexandria on April 14th. Let me know if you are interested in attending. It's free.
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Old 03-29-2007, 12:35 PM
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Quote:
Originally Posted by F-BIRD'88
I think you were looking at a bare block, not an assembled short block. The cheapest one is $1300.

It has dished pistons. When combined with 76cc cylinder heads it will have a8.5:1 cr. (approx).
Are you sure the motor in the Caprice is a Chev motor?
All the chev 307's are very old.
GM did install a "corporate 307" in those cars among others.
Its a Olds motor.

It kinda looks like a OLD 305........by the way, that IS just a bare block....yikes!!

where in the world can I get just a good (but not TOO expensive) stock Chevy 350 short block from?
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Old 03-29-2007, 12:39 PM
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Quote:
Originally Posted by Countilaw
Me and a bunch of chevy guys are having a meet in Alexandria on April 14th. Let me know if you are interested in attending. It's free.

maybe, if i'm not TOO sore from sugery(on the 13th)
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Old 03-29-2007, 01:10 PM
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chevy engines used in the 80s caprices were the 267 and the 305 anf the 350

305 was most common by far

267 was only a couple years, 82 83 84 or so
350 was uncommon and only in some 9C1/9C6 or towing applications

if it doesnt look like an olsmobile engine then its a 305 99% sure

run the numbers off it to know

stamping code off front deck on pass side under behind alternator

or casting code off the block
or cylinder head casting number

or a pic
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