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

When it comes to engine building, cylinder heads are of utmost importance. Here's why Chevy's small-block Vortec heads could ...

Whether building an engine from scratch or modifying the engine already in your car, there's no doubt that choosing the right cylinder heads for your combination can greatly affect the horsepower and ...

Back in the early 1990s the Gen II LT1 and LT4 engines powered GM's hottest performance cars, but GM read the tea leaves and knew that this platform would not be able to get them where they would ...

Memphis, Tennessee, has long been the cradle of the aftermarket performance industry, second only to Los Angeles. So, it should come as no surprise a legendary name like Racing Head Service (RHS) ...

I worked as a machinist in an automotive machine shop in the early 1980s before my career took me into the aerospace sector. The shop's high volume of mundane engine rebuilds and turning brake drums ...

This adventure started with a $300 set of used aluminum cylinder heads from a trashed '87 Corvette. Several months later, not to mention about $8,000, I found just over 80 hp, and about 90 lb-ft of ...

Cylinder head porting is one of those garage mods that lives somewhere between speed-shop legend and flow-bench science. Also referred to as port and polish, the idea is simple: Open up the intake and ...