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…]
TREMEC Driveline Angle Finder App
Cool Products

TREMEC Driveline Angle Finder App

Take the guesswork out of your chassis setup with the free TREMEC Driveline Angle Finder. By using your smartphone as a measuring device, the app will calculate each u-joint angle and provide an overall driveline operating angle with a Pass/Fail response. [Read More…]
Build Your Own Hot Rod
Builds / Projects

How To Build A Hot Rod

Learn how to build a hot rod with these resources that help facilitate your build from inspiration and planning to building and customization. These tools help locate donor vehicles, project cars, and can determine what other cars have the parts you need (a big help at the salvage yard). Start you build here! [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…]
Axle Flange Housing Identification
Technical Info

Axle Flange Housing Identification

Axle Flange Housing Identification. Chevrolet, Ford, Oldsmobile, Pontiac — they all use different axle flanges. The ability to identify the flange you have can save time and hassle when it comes time to buy parts. Use the figure below to help identify some of the more common axle flanges… [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…]