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

The AIR FLOW RESEARCH BBC 265cc CNC Aluminum Heads with 109cc Magnum combustion chambers are designed for big-block Chevy enthusiasts looking to enhance their performance engines. These heads cater to builders and mechanics who prioritize maximum airflow without sacrificing reliability or drivability. They are suitable for both street performance motors and dedicated race engines.

Featuring a 265cc intake port volume and a 109cc open-chamber design, these heads optimize combustion efficiency and minimize detonation risk. The CNC-ported aluminum construction provides superior thermal management and flow efficiency compared to traditional cast-iron heads. This design reduces heat rejection and enhances cooling system performance in high-output applications.

Ideal for BBC engines ranging from 427 to 502 cubic inches, these heads deliver substantial horsepower gains across a wide RPM range. The lightweight aluminum construction contributes to improved power-to-weight ratios and reduces the inertial load on the crankshaft. With precision CNC finishing, they ensure tight tolerances and exceptional valve seat durability.