To determine the spline size of a component (rack and pinion, steering column, and steering box), measure the outside diameter and count the number of splines. If there is a flat spot on the shaft and some of [More…]
There are two measurements that you can use to determine what spring length you’ll need for your project: Spring Perch Hole Center-Line Measurement: If you are using an axle with vertical perch bolt holes, you can [More…]
Greg Frick from Inland Empire Driveline Service in Ontario, California offers information on how to properly measure for a custom or refurbished stock or aftermarket performance driveshaft. In this video you learn to: Measure from [More…]
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…]
The following American Classic Car Technical Sheets show exploded views of all major body parts and the corresponding OEM part numbers and frame dimensions. 1946-49 models also include electrical wiring diagrams. This information is invaluable [More…]
Back Spacing is a measurement taken from within the inside of the rear side of the wheel. This measurement is important to be sure you have proper wheel clearance for your specific car before purchasing new wheels, wheel spacers and wheel adapters. [More…]
The side of your tire — known as the tire sidewall — contains all of the information you need to know about your tire size. Regardless of the manufacturer, all tires are required to show [More…]
Use the Wheel Bolt Pattern Cross Reference to select your wheel bolt or lug pattern: Select Number of Lugs and Stud Spread in either Inches or Millimeters. The results will display Make, Model and Year as well as the OEM Wheel Size (diameter and width) plus Stud Size, Hub Center Bore and Offset. [More…]
This calculator determines the displacement of the engine by two methods; selecting the engine to get the geometry of the configuration, or by the geometry to get the engine. You may select the engine manufacturer and designation to get the exact parameters. [More…]
Plus Sizing your wheel and tire combination was designed to enhance vehicle performance and appearance by allowing fitment of larger diameter rims and lower profile tires. The theory is that while making these changes, you keep the overall tire diameter within 3% of the original equipment tires. [More…]
Bolt pattern is the diameter of an circle formed by the centers of the wheel lugs. Common bolt patterns are 4, 5, 6, or 8 lug holes. The diagrams here indicate the proper measuring methods. [More…]