Differential Rear-End Gear Calculator
Technical Info

Differential Gear Ratio Calculator

Enter the maximum potential safe engine RPM. Enter the tire size diameter and the target vehicle speed in MPH. Click “Calculate Differential Gear Ratio”. The value will be returned in estimated differential gear ratio, based on the entered values. [Read More…]
How Differential Gears Work
Automotive Basics

Understanding Differential Gears

I got into a discussion some time ago about welding a rear-end on a street vehicle – It became clear that the guy I was discussing this with did not fully understand how a differential works. This video was made in the 1930’s or so and is the best explanation I have seen to date. [Read More…]
Differential Identification Chart
Technical Info

Differential Identification Chart

Your differential is the set of gears that allows your vehicle’s driven wheels to revolve at different speeds by splitting your engine torque in two directions. This differential ID chart shows AMC, Chrysler, Dana, Ford, and GM differentials. [Read More…]