The Toolbox

Does painting your radiator black affect cooling ability or is it an old wives’ tale? If painted properly your cooling system will be fine.

The 700R4 is a great choice when it's time to upgrade your classic car or truck with an overdrive transmission. Here's what you need to know about GM's famous 4-speed automatic.

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

Explore dirt stock car racing’s key terms, classes, rules, parts, and tips for success in this ultimate guide for new competitors.

Why the budget-friendly Hobby Stock class is grassroots motorsports at its finest, and perfect for first-time dirt track racers.

Learn the differences between H-beam vs I-beam rods, including strength, weight, and more to choose the best connecting rods for your engine.

Building GM’s LQ4 6.0L Gen 3 LS engine for various power levels is easy with the right performance parts recipe.

It's fun to row your own gears. Tremec transmissions are a great way to add a modern overdrive manual to your classic car or truck. Here's a guide to help you select the right one.

Inside GM’s Gen V LT engine family: history, tech, and performance of each LT engine option available.

An LS cam swap can yield big power gains. And, you can do it at home. Here's how...