MILT

Just curious how hard it would be to put a 3.8 or 4.3 in place of a 2.8/3.1. I am only concerned with the motor positioning. This is only if I decide to start a super/turbo 6 project.

I am trying to remember if the motor mounts were the same--I don't think so, but whatever.

Dan84SC

Converting to a 3.8L or 4.3L is almost identical to converting to a V8. Motor mounts, etc. are the same, as well as you'd need a different transmission.

TomP

Has anyone tried to get polyurethane motor mounts for our cars? The Energy Suspension website lists their motor-mount-compatibility by GM part #, not application. I never bothered to call GM to try to find out our motor mount part #'s.


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards

MILT

I have a V8 700R4, V6 700R4, and a 2004R tranny laying around (I figured the 3.8/4.3 would work with the 2004R for sure, prob the V8 700R4 tranny as well). I think I would eventually like to do a twin turbo V6, but right now am just in initial planning stages.

I don't want to monkey around w/ using a 60 degree six. The GN's proved the 3.8 worked fine, and the Typhoon/Syclone did the same for the 4.3 engine.

TomP

Why go to a 3.8, though? You'll have to do the same amount of work as putting a v8 in. Just curious!


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards

ede

i'm building a 4.3 for my 85. why? something differant. i've built SBC's since high school, and that was a long time ago. i just build a 355 for my sons 88 camaro.

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-=ICON MOTORSPORTS=-

3.1 firebird

Turbo V6, sounds cool.