AFR Direct Master Warehouse Distributor - All AFR Products Available. AFR 315cc BBF Bullitt Cylinder Heads. The 315cc heads are AFR's largest and best flowing BBF heads! They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings, and high quality components throughout. These heads are best suited for large displacement high RPM Big Block Ford racing engines or radical "Pro Street" style builds. Component upgrades and machining options are available to customize AFR Heads to your specific build. Important - Due to AFR's revised valve location and angle, application specific AFR pistons or fly cutting your current pistons will be required. AFR Part # 3837. There are many…