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.

one 6 for another

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Old 03-30-2001, 09:49 AM
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one 6 for another

how hard would it be to switch out my 2.8 for a turbo charged grand national 6?
would i be able to use the same transmision i have now?

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1988 IROC-Z Convertible 305 TPI automatic, power everything. has K&N's and an Air Foil
soon to have hooker cat-back( waiting to install)
1986 Sport Coupe / berlinetta
2.8 MPFI V6 5 speed
Old 03-30-2001, 02:50 PM
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That would be a pretty big project. Not only finding the motor, but all the other parts you need like computer and wiring harnass.

I don't think the tranny's are the same. I'm pretty sure that the grand national 3.8 had a 2004r automatic behind it. You would probably be better off buying a turbo 3.8 out of one of the 89 turbo trans ams.

Good luck

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1992 Red RS with 305 TBI
Old 04-02-2001, 02:34 AM
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Post this over in the V6 board too, there's some guys who've looked into it. I believe the transmission, and some other small stuff needs to be replaced. Also, if you want AC, you'll have to find heads off of a 89 TTA.
Old 04-02-2001, 01:42 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Check the FAQ's in Tech Central. It's addressed there.




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