Modified Shift Lights

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

How proportioning valves work, fixed vs adjustable valves explained, and how to reset a prop valve.

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.

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 order to be competitive and win, it's important to find the right set up that works for you and your car. Here's some general reminders to remember during set up!

Super Chevy features the Speedway exclusive Lokar Muscle Car Shifter Knob Adapter

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

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

Looking to replace a turn signal switch in your street rod, rat rod or muscle car? Kevin explains the install process in his 1954 Belair, which you can apply to your own build.

Tech write-up and a video of a Lokar shifter install on an automatic transmission.