Proform Valve Spring Testers

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

Leaking engine cylinders is an important preventative maintenance test to do while racing. Learn the steps to perform this test and how to indicate proper engine tuning.

Making great horsepower on a budget is the LS engine family’s claim to fame, but just like any other engine, the more power you ask of it the more you’ll need to spend.

A guide on how to check piston to valve clearance to prevent interference. See what tools are used to make this process easier.

Power brake boosters offer lower pedal effort and better braking characteristics, but which one is right for your hot rod, muscle car, or truck? We take the guesswork out of that question with our latest buyer's guide.

Down time between races? Check out these recommended tests to keep your engine running at peak performance!

Learn about some of the differences between factory plug wires and the improvements you'll receive with a quality set of aftermarket performance wires in our spark plug wire buyer's guide

If your replacing, or purchasing a new spring for a solid front axle, it's important to know where to measure from to ensure you get the right spring for your rod.

Pat talks about air solenoids for your air ride setup.

Testing a 2 or 3 wire speed sensor sounds difficult, but these videos show that it actually is quite easy!