The following formula will work for any GM, Ford or Chrysler vehicle and is very useful when there is no established baseline from which to work from such as replacing a transmission in a vehicle that was purchased without a drive line.

# Drive Teeth x Axle Ratio x Tire Rev. per Mile 1001

= # Driven Teeth

Use the following formula to calculate the Tire Rev. per Mile for the above formula.

Tire Rev. per Mile =

20168 Tire Diameter (inches)