These 356-T6 aluminum heads are designed for high rpm or large displacement engines. They feature 117cc open style chambers and 370cc intake runners. Will fit all Mark IV, V and VI blocks.

Heads include threaded inserts (heli-coil) in rocker stud and exhaust manifold bolt holes. They have hardened seats and bronze valve guides for strength and durability, and a minimum 9/16 in. deck thickness and machined valve cover rails provide a more consistent gasket seal. Victor series heads are a step above the rest, for even greater gains in horsepower. All of these heads feature reinforced rocker stud bosses, high-flow intake/exhaust ports, and specially contoured combustion chambers. Prices per head.