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.

what do you think?

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Old Sep 2, 2006 | 09:39 PM
  #1  
slowfast's Avatar
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Joined: Sep 2005
Posts: 717
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From: Edison nj.
Car: 84 firebird
Engine: 400 sbc
Transmission: th350
Axle/Gears: 3.08
what do you think?

So Ill be swaping my burned out LG4 for a rebuilt motor soon.

heres the specs

Motor:
77 4 bolt main block bored .030 over
speed pro flattops .030 over
cam = 241/249@.050 .525/546
bowtie raised port heads fully ported
2.02/1.60 manley stainless valves
port matched victor jr intake
holley 750 dp
110gph fp


And hedman shorty headers and a dynomax 2.5 catback.


What gears and tourque converter will I need?
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Old Sep 3, 2006 | 12:19 PM
  #2  
1badrocZ's Avatar
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Joined: Mar 2003
Posts: 378
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From: Ohio
Car: 1985 IrocZ
Engine: Carbed 383
Transmission: Tremec T-56
Axle/Gears: 3.42
I dont think hedman shorties and a 2.5" catback will cut it for this motor. The cam you have listed is pretty big and will require somewhere around a 3000 rpm converter.
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