Stock Car Valve Springs

Learn how to choose the right valve springs for your camshaft, the differences between single and dual valve springs and when to replace them.

These days, muscle cars aren't just for straight line blasts down the dragstrip. Here's a primer on some of the trick hardware that's available to make your muscle car into a corner carving Pro Touring car that can do it all.

Drag racing shocks can make a big difference in your drag car's performance. Here's a guide to what's available and some options to hook up your car at the dragstrip.

We talked to a few of our in-house race experts about ways to make this racing season your best one yet!

Learn what a manual valve body can and cannot do for your automatic transmission and performance driving needs

There is certainly more than one way to get your project's ride height or stance where you want it and we provide a brief overview of the options in this buyer's guide on lowering products.

Adjustable suspensions allow for big changes to a car's stance and handling characteristics, but it's important to understand some suspension tuning principles before making big changes to the suspension under your custom or race car.

Speedway Motors, a manufacturer, retailer, and distributor of high-quality automotive parts and racing products, will introduce new racing products in their booth (#4101) at the 2025 PRI Show Dec. 11-13 in Indianapolis, Ind.

Today we take a look at the differences between proportioning valves (both fixed and adjustable models) and the residual pressure valves we offer in this buyer's guide.

A guide to choosing the right camshaft for your engine. See how to install a new LSR roller camshaft while upgrading valve springs and rocker trunnions.