I just bought a 97 SS, and the rear gears have been changed. in 4th gear, at 2000 rpms I am at 36 mph. forgot to mention, its a 6 speed. any help is appreciated.

 

Jack up the rear and spin the rear tire one complete turn...count how many rotations the driveshaft makes.

 

enough said, thank you.

 

or here's an easier way... look in the glove box for one of these codes...

GU6 - 3.42's

GT4 - 3.73's

GU5 - 3.23's

 

the gears have been changed silveradokid

 

Silveradokidd, thanks man, but like 99 sierra said, the rear was changed. Originally, it was 3:42's, I have a feeling that I am running 4:10s right now. It runs at 2000 rpms at 72 mph in 6th gear, if thats any indication.

Unfortunately, I am not going to be home for another 2 weeks, traveling for work.

 

gotcha man