AFR – 24° Rectangular Port Aluminum Marine Cylinder Heads – Bare

DescriptionAFR’s 305cc rectangle port heads feature partially CNC ported intake, exhaust & chambers, A356 aluminum castings and high-quality components throughout. Recommended for moderate street, or street/strip builds with displacements up to 509 cubic inches, operating up to 6500 RPM. Also available with 100% CNC chambers for increased air flow.