AFR 305cc Rectangle Port 24 Degree Magnum Aluminum Cylinder Heads - Big Block Chevrolet GBDXS1 Fits MAC1 or MAC3

Fits MAC1 or MAC3

Left Side Fixed

1983-1996 Ford F-150

8L 3-Valve Ford Engines use 12mm spark plugs

Weight Savings

AFR 305cc Rectangle Port 24 Degree Magnum Aluminum Cylinder Heads - Big Block Chevrolet GBDXS1 Fits MAC1 or MAC3The smallest big block Chevy rectangle port intake volume runners in AFR's line up, but don't let size fool you. This partially ported 305cc cylinder head features a CNC bowl & chamber blend that will provide you with flow numbers most medium sized cylinder heads (and some larger) can only dream about. This line was designed to optimize low and mid lift airflow, while still generating impressive peak figures. The application should be focused on