bull8t

minimum 4.10's! unless you plan on adding a supercharger or nitrous. Im stayin n/a so Im going with 4.30's. rpm's are minimal between the two.

bull8t

check this out http://www.tchracing.com/tech/gearcalc.php

Monch

thats link is quite helpful, thanks!

04ShakinSteed

Get 3.73's for all the miles you are driving....go with 4.10's if you have an auto.

AirForce2004

K I have a friend who put 4.10 gears on his 03 gt with a vortec and all the works, he has no issues with traction.

I put 4.10 in mine and plan on getting suspension upgrade and s/c soon. The gas mileage is hardly noticable... and your only sitting at a couple hundred rpm more.... put a bigger water pump on if your worried.

I made a 200 mile trip this past weekend and used half a tank or somewhere around there.

MD is right 4.10 all the way or nadda.

Js281GT

If he had a six speed ya but......................