BBC 265cc CNC Alum Heads Magnum 109cc O/P

The Airflow Research (AFR) 265cc Oval Port Cylinder Heads are a cost-effective choice for big block Chevy engines, serving as an upgrade over re-worked factory heads. These heads feature partially CNC machined intake runners and exhaust ports, with options for partial or full CNC machining of the combustion chambers and a bowl blend. They are designed for high-performance applications, capable of flowing 354 CFM at 0.650" lift, and are recommended for street, street/strip, and towing applications with displacements up to 468 cubic inches and operating at or below 6200 RPM. They are sold as a pair.