HeadGames Motorworks puts the Gen 4 F-150 cylinder head on the bench for a comprehensive Coyote head flow test.

To celebrate HOT ROD's 75th anniversary, we teamed up with CASTROL GTX to bring you some of the stories that exemplify the core of what HOT ROD is and reflect the brand's influence on America's car ...

Part I in the October 2002 issue began to unravel the mystery of deciphering airflow numbers that are derived from flow bench testing. We addressed the question, "Why test for airflow?" and detailed ...

Port Flow Analyzer – now available from SuperFlow Technologies Group – is a computer software program designed to streamline recording, calculating, reporting and graphing of cylinder head flowbench ...

In the search for more power on a supercharged vehicle, one way to improve performance is by increasing the capabilities of the heads and cams. Though the Three-Valve cylinder heads flow much better ...

Beneath that stern, intimidating glare and impressive stature is a man with few equals in the realm of cylinder head expertise. There are probably a few people who know more about cylinder heads than ...

Cracked heads and blown head gaskets can lead to very similar issues in cars. Figuring out which problem you're suffering from can be difficult.