Modified Gear Drives

Follow along as we install a Pete Jackson Noisy Gear Drive on a Chevy 454. Learn about the installation process from Speedway Motors Street Tech Kevin.

Dirt modified racing delivers high-horsepower, adrenaline-fueled action, learn more about them and their racing classes

Quick change rears have been around since the 1940s and while many are familiar with them, to others they’re a mystery we’ll help explain

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

We help determine what are the best 10-spline quick change gear ratios for your street or racing needs

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

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.

There are a lot of choices when it comes to automatic shifters, and we’ll help unpack all the options and features in our automatic shifter buyer’s guide

"My parents asked me if it was something I truly wanted to do, because once you get bit by that racing bug, there is no going back."

There's something special about your first car. Here are a few from the Speedway Motors team.