Ford Thunderbird 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.

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

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

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

Ford’s small block and big block engine families have their share of flexplate differences. We’ll show you what to look for in this buyer’s guide.

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

Learn how to install a side detent shifter in a 1969 Chevy C10.