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.

V6 - V8 question

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Old Jun 24, 2005 | 07:45 AM
  #1  
nelapse's Avatar
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From: Mobile, AL
Car: GTA
Engine: 383 HSR
Transmission: TH-700R4
Axle/Gears: 3.42
V6 - V8 question

I have a 88 2.8 firebird 5 speed. I got a free blazer, 88ish w/ 350
I know I can use the engine but can I use the tranny if it is a 4x4 tranny? Someone once told me that I could bolt that 350 to the 5speed tranny my 2.8 has but will eventually kick the bucket because its weak. What should I take out of this free blazer?
Thanks in advance. PS the blazer tranny is automatic, also I have read the swap thread sticky, It didnt answer my question so dont tell me to read it. thanks
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Old Jun 24, 2005 | 08:09 AM
  #2  
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From: Kingston, Tn
Car: 1987 GTA
Engine: LT1
Transmission: T56
Axle/Gears: 9 bolt 3.70 posi
There is a sticky at the top of this page for the V6-V8 swap that answers alot of swap questions. Everything about the tranny is in the sticky, the V6 5-speed will not bolt up to the 350
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Old Jun 24, 2005 | 08:14 AM
  #3  
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From: Mobile, AL
Car: GTA
Engine: 383 HSR
Transmission: TH-700R4
Axle/Gears: 3.42
Yes I read the damn sticky and no it doesnt talk about the tranny
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Old Jun 24, 2005 | 08:23 AM
  #4  
Project: 85 2.8 bird's Avatar
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From: BFE, MD
Car: 13 Ram 1500/ 78 Formy
Engine: 5.7 / 7.4
Transmission: 6sp / TH350
Axle/Gears: 3.55 posi / 3.23
ok, then NO the V6 tranny will not bolt up. Sell your V6 5spd & v8 auto & get a good,healthy v8 5spd.
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Old Jun 24, 2005 | 08:49 AM
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From: Mobile, AL
Car: GTA
Engine: 383 HSR
Transmission: TH-700R4
Axle/Gears: 3.42
Which tranny is manual that will bolt up. the 700rh or whatever that is automatic so which is standard? Also the 4X4 tranny I have, its automatic but can I make it work?
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Old Jun 24, 2005 | 10:00 AM
  #6  
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Car: 1982 Z28
Engine: LS1
Transmission: T56
T56 from a '94-97 fourth-gen is a nice one but requires some modding, or a T-5 from a V8 equipped third gen should bolt right in.
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Old Jun 24, 2005 | 10:23 AM
  #7  
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From: Kingston, Tn
Car: 1987 GTA
Engine: LT1
Transmission: T56
Axle/Gears: 9 bolt 3.70 posi
Originally posted by Five7KidAnything the V6 bolts to, and anything that bolts to the V6, will be different than the V8. Only possible exceptions are AC compressor (but the hoses and brackets will be different), alternator (early V6's were different, and again the brackets & wiring are different anyway), and power steering pump (guess what - the brackets & hoses are different).
700R4 from a 3rd gen F-body would be the best to use if you want to go automatic, for manual, T5 from a 3rd gen f-body, plus the hydraulics.
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Old Jun 24, 2005 | 11:05 AM
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From: Mobile, AL
Car: GTA
Engine: 383 HSR
Transmission: TH-700R4
Axle/Gears: 3.42
Originally posted by Klortho
for manual, T5 from a 3rd gen f-body, plus the hydraulics.
thats what i was looking for thanks
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Old Jun 24, 2005 | 03:59 PM
  #9  
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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
Originally posted by nelapse
Yes I read the damn sticky and no it doesnt talk about the tranny
Makes all the time and thought put into the sticky seem so appreciated...

You can make the 4x4 tranny work if you swap out the output shaft and tailshaft for f-body parts.

(As the sticky says, all possiblies aren't covered. Anticipating someone wanting to use a 4x4 transmission...)
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