Hot Rod 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.

When it comes to a traditional style build on an early hot rod it just has to be rolling on a solid front axle of some sort. In this buyer's guide we take you through I-beam and round tube solid axles, spindle choices, radius rod needs, and more.

This or that: stripped down for speed or low and slow in a slick custom?

It may feel like a daunting task attempting to determine the best leaf spring for your traditional hot rod straight axle build, but our buyer's guide will surely help.

Dive into some of the history and unique differences between Ford and Chevy spindles for solid front axles and what will perform best on your hot rod.

If you had to pick only one-is it a hot rod or a muscle car?

Learn how to lower a hot rod by modifying the axles and some history behind early hop ups. This project features a Ford axle with wishbones for a Model A.

Tim talks about the process of upgrading the factory hubs on his 1929 Roadster project with new manufacture units courtesy of Speedway Motors.

Look up "hot rod" in the dictionary and you'll see a picture of this car.