I have a 1993 trans am that i recently bought. the guy that i got it from said it had 4:10 gears in the rear end. My speedometer reads 70 when im doing 55 and 90 when im doing 70mph. Anyways i was wondering if any of yall know how i can fix it.

 

also it is a t56 transmission

 

The 93 speedometer is different than all other years of the LT1. There is a gear in the vehicle speed sensor (VSS) that can be changed. The VSS is on the tailshaft housing of the tranny, driver's side.

Minor point.... 4.10:1 gears or 4.10, not 4:10

 

thanks. do you know where i can get that gear at for the sensor?

 

You have to calculate which DRIVEN gear you need for the VSS, based on which DRIVE gear installed on the tranny output shaft:

http://www.bgsoflex.com/cgi-bin/spee...n&givengear=18

This outfit should have the DRIVEN gear and if necessary the DRIVE gear.

http://www.transmissioncenter.net/sp...n_______va.htm