[tbirdaholic]

I have been thinking about putting in 3.73 or 3.55 i have 3.08s in it right know any suggestions also what a the rpms on these at like 75mph thanks

 

[mike884_2]

going to need a chip if you want to jump to 3.73 gears from your 3.08. thats why i am going with 3.55 Also i know 3.55s will jump the rpms up by a little more than 300. not sure about 3.73 just my .02

 

[The Great Obucina]

http://www.tccoa.com/articles/gears/index.html

 

[Marl]

Here's a rather lengthy post I started lastnight that pretty much has all of your answers in it.

http://forums.tccoa.com/showthread.php?t=97513

btw, thanks to all the answered!