BBC 315cc Alum Heads Magnum 121cc Assembled

The BBC 315cc Alum Heads Magnum 121cc Assembled cylinder head from Air Flow Research is designed for big-block Chevrolet engine builds, offering a performance-engineered solution for high-output applications. This assembled pair is ideal for engine builders, restoration specialists, and performance enthusiasts seeking superior airflow characteristics and reliable combustion chamber geometry.

Constructed from premium aluminum alloy, the BBC 315cc Alum Heads feature an intake port volume of 315 cc paired with a compact combustion chamber of 121 cc, optimizing intake charge velocity and flame propagation for efficient fuel burn. The 2.250-inch intake and 1.880-inch exhaust valve configuration maximizes breathing capacity while maintaining structural integrity. The angle-plug design positions the spark plug for optimal ignition geometry, promoting complete combustion.

Engine builders and restoration specialists will benefit most from this complete assembled solution, particularly when considering the 1.625-inch valve spring package engineered to manage valve float across a wide RPM range. This ensures durability under sustained high-load conditions typical of street performance and racing applications, making it a reliable choice for enthusiasts.