Im trying to find a 8 Tooth Drive Gear for a 98 mustang gt. Im doing a gear upgrade to 373 and was told i need a 21 tooth gear and an 8 tooth. I got the 21 from american muslce but cant find an 8. Its all pretty confusing to me. Any help would be great

 

Late model restoration I'm pretty sure has the 8 tooth drive gear

 

Is your car an auto or manual? We dont offer an 8 tooth drive gear. All I have is the 6 and 7 tooth gears. If you car is a manual, skip the drive gear change and go with this re-calibrator.
http://www.latemodelrestoration.com/...l-Manual-Trans

This will allow you to adjust for year tire size as well as any gear change you make.

 

its an auto. Im not sure what drive gear it has now. A 7 or 8..but i purchased a 21 tooth in hopes that it will be close. I heard to change drive gear you have to disassemble part of the trans..is this true..?