AFR BBC 305cc Rectangle Port Aluminum Cylinder Heads Chevy Big Block 509 2100-1. This product data sheet is originally written in English. AFR Direct Master Warehouse Distributor - All AFR Products Available. AFR 305cc BBC Rectangle Cylinder Heads. AFR'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 (see chart). Component upgrades and machining options are available to customize AFR Heads to your specific build. AFR Part # 2100-1. There…

AFR Direct Master Warehouse Distributor - All AFR Products Available. AFR 305cc BBC Rectangle Cylinder Heads. AFR'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 (see chart). Component upgrades and machining options are available to customize AFR Heads to your specific build. AFR Part # 2100-1. There are many different options available for AFR heads, please view the details section below for the details on these heads. For the…