Dirt Track Differential Covers

Explore dirt stock car racing’s key terms, classes, rules, parts, and tips for success in this ultimate guide for new competitors.

Learn what gear oils do for your differential and how to choose the best gear lubricant for your application's needs

A brief overview of the steps Speedway Motors takes to ensure you get a quality differential.

Quick change rears have been around since the 1940s and while many are familiar with them, to others they’re a mystery we’ll help explain

We help determine what are the best 10-spline quick change gear ratios for your street or racing needs

A short article explaining the main differences between open and limited slip differentials.

In this video, we walk through the process of installing a rear disc brake conversion kit that uses a weld-on caliper bracket.

Upgrade your tires using a cross-reference chart to convert bias-ply tire sizes to radial tire sizes, as well as a formula to find the overall height of a tire.

Tim talks about early hemi valve cover wire caps.

Just about any classic vehicle’s drum brakes can be upgraded to the increased braking performance of a disc brake system. Our Buyer’s Guide provides an overview of disc brake benefits and what you need to succeed with your upgrade.