AFR Direct Master Warehouse Distributor - All AFR Products Available. AFR 235cc SBC Competition Cylinder Heads. AFR's 235cc "Competition" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. This head features 60/40 valve spacing and requires shaft mount rocker arms for optimum valve train geometry can be used with. 050 offset intake rockers for drag race only applications. Component upgrade and machining options are available to customize AFR Heads to your specific build. AFR Part # 1130-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…