ravnlunatic00

..just bought a 2001 Z28 and was wondering how I would go about finding out what gears it had in it?

Thanks!!

BigE

iTrader: (2)

If it's an automatic, it came with either 2.73 or 3.23 gears. If it's a manual, it's 3.42. On the auto, the 3.23's are the "performance" axle. You can check your RPO codes. I believe the gear code is of the form GU# where the number is some single digit number. 2.73's are pretty rare for a V8 car, so I'd say it's 3.23 or 3.42 depending on trans.

jammon46

GU2 = 2.73's
GU5 = 3.23's
GU6 = 3.42's

Look on the door jamb. There will be a white sticker with a bunch of codes like this these are all the options your car has.

ravnlunatic00

thanks guys!!!!

BriancWS6

iTrader: (18)

Actually they're quite common

But as others have said, look at your RPO codes on the door. M6 is always 3.42, and a quick way to check without looking at the RPO codes if it's an auto is to look at the driveshaft......steel=2.73 aluminum=3.23

BigE

iTrader: (2)

I haven't looked at the production numbers, but I have seen hundreds of these cars and only 2 with 2.73's. So I was basing my assessment off of personal experience. :shrug: <-- don't know if we have that smiley