i have a 1982 firebird with a 3 speed automatic. what would be the best gear for that rearend?

 

Probably what ya have a 3:42
It is the wise choice.

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Chat Soon,
KED85
Karl
1985 Firebird 2.8 to 3.4 swap project for Smog Happy LA, CA

 

Actually, he's probably got a 3.08 rear gear inside that car. I think 3.08's were for 82 & 83 V6's (with 3-speed automatics), and 3.23's were for 1984 V6's with the introduction of the 4-speed automatic. 85-89 MPFI v6's would have the 3.42 as a rear gear.

But yeah, putting an 85-89 rear axle underneath your car would give you 3.42's, and you should feel a noticable difference. If you want more info on that swap, just ask!


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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
---Think your car could be pic of the week? Visit http://www.f-body.net for details!

 

First I would find out what my final drive ratio is.. Check hte tire size I have then figure out what would give you a 3.55 final ratio based on tire diameter, ect...