Modified Grand National Axles

This article demonstrates how to install a complete Winters quick change kit with additional parts including birdcages, brackets, and calipers for a modified race 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.

Learn about the power behind the G-body platform and the steps to upgrade a 7.5" bolt rear end to a 8.5" to withstand high horsepower. See how to change the differential fluid and install new gaskets.

In this budget build, a GM rear end is upgraded in order to hold 400+ HP. See how spherical bushings are replaced in a used 8.5” GM 10 bolt rear end.

Learn a few tips on how to properly mount Modified bodies and some products that will help get your race car body fabrication job done!

Devyn Peterson is an Auto Tech in the Speedway Motors Customer Experience center. He's also a racer, starting out in karts when he was just 5 years old. He moved up to a Modified when he was 13 and hasn't looked back!

In this Tech Tip, John answers a customer question about finding the right axle length for his 1931 Model A.

Our hot rod expert takes you through his ford I beam axle setup. Follow as he sets up the front end on his split wishbone front suspension Model A.

Here are some suggestions about which tools can make your life easier while building body panels.

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.