Where can I find it? i might be selling the z so I would like to get all the kinks out..... so yeah.... i dropped in 3.73 gears and need to recalibrate the speedo from 3.23

 

http://www.sallee-chevrolet.com/Chev...tallation.html

Scholl down to speedo calibration... You have to change the gear....

 

Ok.... so which one do I need? lol.... and how hard is it to change?

I went from 3.23 to 3.73.... 3.23 originals.

 

You have to use the "calculations" that are given; If you have a 28in dia tire and a 17 teeth driven gear, you would need a 45 teeth drive gear....

Its easy to replace.... Take about 5 minutes.... You can locate the driven gears at your local parts store, dealership, or transmission shop....