Gear Ratio

[TransAmFanatic]

need help on what size are the stock gears on a 1999 ponitac trans am?

[shady milkman]

for?? a a4 hi-po is gear ratio is 3.23.

[Cronex]

...performance option for an A4 is 3.23's. The standard is 2.73's.

[TransAmFanatic]

thanks guys

[Cronex]

No problem.

[shady milkman]

...performance option for an A4 is 3.23's. The standard is 2.73's.

i'm sorry your right..you would think i would know my own gears..by the way the rpo code for the 3.23 is gu5 .and gu2 for 2.73s

[Cronex]

Its cool. Figured I'd just chime in and help out. Sometimes people forget, no biggie.

[slims00ls1z28]

Easiest way to tell, if the driveshaft is rusty you have 2.73's if it is still aluminum 3.23's.

[shady milkman]

Easiest way to tell, if the driveshaft is rusty you have 2.73's if it is still aluminum 3.23's.

really? i never new that.

[Y2KPewterSS]

Easiest way to tell, if the driveshaft is rusty you have 2.73's if it is still aluminum 3.23's.

Unless a previous owner switched shafts. :D

[jujofields]

Easiest way to tell, if the driveshaft is rusty you have 2.73's if it is still aluminum 3.23's.

Huh, I've never heard that before....

[slims00ls1z28]

2.73 cars came with steel driveshafts (hence rusty). 3.23 Cars with the aluminum one (not rusty). Part of the package. If previous owners switched them out it is an entirely different ball game of course.