The major drawback to the 5.3-liter junkyard block is it's displacement limitations.

Now, 454 cubes from a humble iron 5.3-liter truck block is possible.

Cometic Gasket expands its performance sealing line with new head gaskets for Big Block Chevy, LMM/LLY Duramax, and GM EcoTec3 V6 engines.

Both MLS and MLX gaskets are included in the new offerings.

Experienced tuners know that the stoichiometric air-fuel ratio of a fuel is the exact proportion of complete combustion.

But what does it matter?

A new iron block for big-inch and high-horsepower LS builds.

Summit Racing delivers an all-new performance block to the aftermarket.

​Smokey Yunick was a legendary figure in motorsports, innovative and often unconventional but also controversial.

Hill Country Performance uncovers some of his old tricks in parts they acquired.

SI Valves now offers custom size valve packages with reduced stems (5.5mm-9mm) in stainless or Inconel for high-RPM racing engine builders.

Edelbrock's Pro Port DR-17 is designed to give head-porters a blank canvas that is HIP treated with extra-thick walls for porting.

It's a great starting point for anyone in the big-block Chevy cylinder head game.