1986 305 TPI to a 1987 V6 Grand National
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Joined: Jul 2009
Posts: 47
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From: Germantown, TN
Car: 1986 IROC-Z
Engine: LS2
Transmission: T56
Axle/Gears: 3.23
1986 305 TPI to a 1987 V6 Grand National
I currently have a 1986 IROC-Z 305 TPI engine. I want to know if it's possible, without major modification, to install a V6 turbo-charged engine out of a 1987 Buick Grand National. I'm told from a friend that engine/tranny mounts, wiring harness, etc... are identical and this would be an easy drop in. Any help would be greatly appreciated. Thank you.
Joined: Mar 2000
Posts: 43,187
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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
https://www.thirdgen.org/buick-3.8L-...ne-swap-f-body
I think you'll soon see that what you were told is not completely accurate.
I think you'll soon see that what you were told is not completely accurate.
Thread Starter
Junior Member
Joined: Jul 2009
Posts: 47
Likes: 0
From: Germantown, TN
Car: 1986 IROC-Z
Engine: LS2
Transmission: T56
Axle/Gears: 3.23
Re: 1986 305 TPI to a 1987 V6 Grand National
Five7kid, Thank you for the reply. I guess I'll look at putting in a 350 afterall. What I've seen however is that it has to be a certain year 350 if I want to use my current harness. Something about the heads/intake manifold for the 1986 I believe.
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