AFR Direct Master Warehouse Distributor - All AFR Products Available. AFR 385cc BBC Rectangle Port Cylinder Heads. The 385cc heads are AFR's largest and best flowing BBC heads! They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings, Titanium retainers, and high quality components throughout. These heads are best suited for large displacement (540+) high RPM Big Block Chevrolet racing engines. Component upgrades and machining options are available to customize AFR Heads to your specific build. AFR Part # 2020-TI. There are many different options available for AFR heads, please view the details section below for the details on these heads. For the many other AFR heads available,…