Automatic Transmissions

Brinn Installation Dos and Don'ts

Learn how to measure wheel bolt circles with our wheel bolt pattern guide. Use this chart to make sure the rims you order match your wheel bolt pattern and fit your vehicle.

In this tech article, we discuss the pros and cons of the Ford 9-Inch and the Chevy 12 Bolt rear ends. Click here for our take on this classic debate.

A brief overview of the steps Speedway Motors takes to ensure you get a quality differential.

Bert LMZ Exploded View

Exlpoded View of the Bert 1300 Late Model Racing Transmission

In this Tech Tip, John responds to a customer looking to upgrade the 8” stock differential in his Cougar to a 9” open diff.

Learn how to measure backspace, torque specs, design, and other wheel basics. Our racing wheel guide covers all you need for a new set of oval track wheels.

Need better tire traction on the track? Read our guide on increasing traction with grooving, siping, and needling to ensure your racing tires have great grip.

Should you mix bias-ply and radial tires? Get all the information you need with our guide on radial tires and bias ply tires, and why mixing is risky.