Re: can someone give me info on putting heard in my 02 gt automatic
Gears are probably one of the best "bolt ons" you can do to your car.
With the addition of steeper gears, you'll notice much better acceleration, better holeshot and slightly higher mpg's in the city, with a slight loss in highway mpgs, ~.5-1.5
General saying is 3.73's for manuals, and 4.10's for autos. But you can certainly use 3.73's or 3.55's in an auto if you want a lesser ratio.
As said a tuner is needed to adjust for the gear change. I'd recommend a custom tuner so you can update your tunes as you mod more.
Professional installation is recommended since the gear install requires detailed measurements and shimming. Improper installs can lead to whining or worse, grinding.
12 Black GT500 SVT PP l VMP TVS l JLT123 l O/R X l 28x11.50Rx15 M/T Street R's l BMR Suspension l Recaros
03 Sonic Blue 3.8 / 17 Magnetic Fusion Sport 2.7 EB