Technical Info
OEM and Aftermarket Shift Knob/Shift Handle Thread Size Chart
Shift Knob and Handle Thread Sizes may vary on vehicle make, model, and trim level, and whether it is OEM, performance, or aftermarket… [More…]
Dimensions
Technical Info
Popular V8 Engine Swap Dimension Chart ~ Will your engine choice fit?
Specs include overall height, length, and width of a fully dressed engine – oil pan, intake, carburetor, front accessory drives, and exhaust. [More…]
Automotive Basics
How To Determine Engine/Pinion Angle
Engine and pinion angle are relative to the ground. Most engines are set at 3 degrees, this allows the carburetor to sit level, however… [More…]
Technical Info
How To Determine Steering Spline Size
Use this steering box/steering rack size chart to select the proper rack and pinion or steering box spline size for your system. [More…]
How To & DIY
How To Measure for a Straight Axle Spring
There are two measurements that you can use to determine what straight axle spring length you’ll need for your project. [More…]
How To & DIY
How To Determine Proper Exhaust Tubing Size
A guide for exhaust-pipe tube size needed to balance prevention of excessive back-pressure while maintaining adequate exhaust-gas velocity. [More…]
How To & DIY
How To Properly Measure for a Driveshaft
Greg Frick explains how to properly measure for a custom or refurbished stock or aftermarket performance driveshaft. [More…]
Technical Info
Wheel, Tire and Fender Fitment Calculator
Wheel and Tire Technical Information – Calculate Wheel Fitment, Tire Stretch and Rolling Radius. Includes Speedometer Error Calculator. Play with specs, try different settings and combinations, compare results… [More…]
Downloads
1946-53 American Classic Car Technical Sheets
View exploded diagrams of major body parts, OEM part numbers, and frame dimensions. 1946-49 models also include electrical wiring diagrams. [More…]
How To & DIY
How To Measure Wheel Back Spacing / Offset
Be sure you have proper wheel clearance for your specific car before purchasing new wheels, wheel spacers, and wheel adapters. [More…]