Ford Expedition Differentials

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.

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

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

Comparing open diff vs limited slip vs locker differentials. Learn how each works, pros and cons, and which is best for your build.

Brief review of the different types of Ford alternators and regulators available through Speedway Motors.