Hitman's Pontiac Trans Am Forum

Trans Am Information => Trans Am Information => Topic started by: brooksman9 on April 16, 2007, 07:10:28 PM

Title: Rear gear ratio???
Post by: brooksman9 on April 16, 2007, 07:10:28 PM
Hey All, I was looking at my build sheet at the axle code and it says "2PE". This is on my 81 Formula. From what I can decifer from gary lisk's site I believe this is a 3.42 standard rear end, and since it revs at about 3 grand going 70 down the highway I do not believe it is the little 2.73 that I originally thought. I can't seem to find any rpo decoders although I know the formulasource used to have one. Can anyone confirm this for me? Thanks
Title: Re: Rear gear ratio???
Post by: Joker (§ir£Ğragon) on April 16, 2007, 07:51:21 PM
I come up with the same thing you do when I check other sources (doing a web search).
Title: Re: Rear gear ratio???
Post by: 7795TAs on April 17, 2007, 01:39:08 PM
This site might help you determine what gears you have.

http://www.miata.net/garage/tirecalc.html
Title: Re: Rear gear ratio???
Post by: Hitman on April 17, 2007, 06:00:30 PM
Actually, try this one

http://www.4lo.com/calc/gearratio.htm