Engine Swap Everything about swapping an engine into your Third Gen.....be it V6, V8, LTX/LSX, crate engine, etc. Pictures, questions, answers, and work logs.

firebird swap

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Old Apr 23, 2007 | 07:52 PM
  #1  
withoutanycause's Avatar
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From: Bloomington, MN
Car: 87 iroc-z28
Engine: 350
Transmission: th350
Axle/Gears: 3.23
firebird swap

I found this 454 on craigslist.com and was wondering if it would work to put this in my 1987 firebird that currently has the stock 2.8 v6. http://minneapolis.craigslist.org/pts/306075744.html
i'm not sure if this is all the info you need to figure out if it would work and any help is greatly appreciated.
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Old Apr 23, 2007 | 08:09 PM
  #2  
five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Check out the V6 to V8 swap, and big block swap stickies at the top of this forum. You'll find that you're the one that needs more information, I'm sure.

After you digest all of that, you'll probably have more questions, so come on back in.
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Old Apr 23, 2007 | 08:47 PM
  #3  
withoutanycause's Avatar
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Joined: Feb 2007
Posts: 55
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From: Bloomington, MN
Car: 87 iroc-z28
Engine: 350
Transmission: th350
Axle/Gears: 3.23
Re: firebird swap

what kind of transmission would i need for a 454 chevy enigine
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Old Apr 23, 2007 | 09:24 PM
  #4  
five7kid's Avatar
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25 Year Member
iTrader: (14)
 
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The listing is dead.

Depends upon how it's built. If pretty much stock, a healthy TH350 would handle it. A TH700 would have to be beefed up to handle it. TH400 is very common behind BBC's that have been built.

For manual transmissions, forget a T5. A T56 and most of the old-school muscle 4-speeds (Muncie, for instance) would handle it.

The stock 10-bolt rear end would need serious beefing up to handle a stock 454. More engine than that, plan on 12-bolt or 9 inch.

Last edited by five7kid; Apr 23, 2007 at 09:30 PM.
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Old Apr 23, 2007 | 10:18 PM
  #5  
withoutanycause's Avatar
Thread Starter
Junior Member
 
Joined: Feb 2007
Posts: 55
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From: Bloomington, MN
Car: 87 iroc-z28
Engine: 350
Transmission: th350
Axle/Gears: 3.23
Re: firebird swap

its probably going to be auto, and would a 9 bolt work, or would it make more sense to just beef up the 10 bolt? thanks again for the help
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