Which speedo gear ???

[michel schryer]

Hi guys,my rear end is a 3.08 IRS on 295's tires and 15" team 3 wheels,tranny is a t-5 from a 90 mustang. Which speedo gear do i need please?? Thanks!

Michel

[427sharpe]

The '90 gearbox should have the 8 tooth drive gear (inside the trans), and you need a 2.33 ratio; if your speedo is pegged to 1000 RPM @ 60, which is pretty much standard. So look for a 19 tooth gear. If yours has the old 7 tooth drive, look for a 17 tooth gear. You can see the internal gear thru the speedo cable hole, the 8 took gear is green, the 7 is yellow. 6 is also available, and is black. It would be a part installed during a rebuild at some point. If you see that one, you need a 14 tooth gear. This combo would be the most accurate for you if you have the trans out and can replace the drive (internal) gear.

[michel schryer]

Thank you mister,i will go see what gear i have on my tranny,thanks again for the valuable info,always can count on knowledgeable people from the forums.

Michel