Inside an internal combustion engine is an intricate web of small tunnels or passageways that enable oil or coolant to flow, which helps keep everything lubricated and operating at the proper ...

From Street Stock to Winston Cup, the three most important areas for engine performance improvements are cylinder heads, valvetrains, and intake manifolds. In particular, cylinder heads affect most ...

Part 2 covers the Pontiac head cooling trick, showing techniques to keep your engine heads cooler under high-performance conditions. Learn practical tips for improved airflow, temperature management, ...

Nearly everyone has heard the words “head gasket” at some point in their life, but nowhere near that many people actually know what one is or what it does. The head gasket is a seal that lives between ...

Cylinder head failures are very dangerous and very expensive, so it's important to recognize the key signs early. Here's what ...

There was a “what-if” question addressed a few months ago in our Performance Q&A column that piqued our interest. The question was simple: If you had a set of iron and aluminum cylinder heads that ...

Diesel enthusiasts invest in strong bolts (or even studs) to clamp our engines’ cylinder head(s) to the block, but it’s our engines’ head gaskets that actually seal these two critical surfaces ...

Imagine a letter showing up in your mailbox from the company that made your car, requesting you to bring it in for a crucial engine component replacement. That might sound a bit strange, but it’s ...