Ford Street Differentials

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

The pros and cons of a welded diff vs open diff, plus what to know before learning how to weld your differential.

Learn how to ID a Ford 8.8 rear end by tag, width, and code. Compare 8.8 vs 9-inch axles, decode gear ratios, and find which Ford models used them.

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

Need help with rear end identification for your muscle car or hot rod? Learn how to identify 9-inch Ford housings and how to measure your axles with our diagrams.

Speedway Motors announced today a list of new products that will be debuted Aug. 5-8 at National Street Rod Association’s (NSRA) 52nd Annual Street Rod Nationals in Louisville, Ky.

Use our Brake System diagram to help with your street rod brake system project. We also diagram both single flare and inverted double flare fittings for you.

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

This resource contains a transmission pan shape ID chart and other tips to help with identifying GM transmissions.