and performance-oriented double hump cast-iron cylinder heads with fresh valve jobs. Other Chevy cylinder head castings would do in a pinch, but the double hump, sometimes called camel hump ...

A “dressed” small-block Chevy (production cast-iron block and heads), minus flywheel, clutch, and bellhousing, weighs about 535 pounds, while a similarly equipped aluminum-block four-cylinder ...

Another good thing about this lineup of Chevy small-block crate ... It features a cast-iron engine block with 64cc aluminum heads but uses a longer, 4.0-inch stroke crankshaft and a lower 10.1 ...

To make that happen, the engine has Fast Burn aluminum cylinder heads and an updated valvetrain ... silicon aluminum pistons inside of a cast iron block. Chevy is offering the engine in two ...