Unfinished combustion chambers, typical finished volumes range from 40cc to 70cc Raised intake and exhaust runners for better airflow and greater power Fits 302 and 351 Ford Racing blocks Used for Drag, Sprint Car and Circle Track Racing Intake and exhaust runner raised .400" over “Yates” C3 head for better flow characteristics Intake valves up to 2.180" diameter, 5.685" long Exhaust valves up to 1.625" diameter, 5.565" long Redesigned integral rocker pad for greater stiffness Uses M-9424-W352 intake manifold with 9.200” deck block Uses Motorcraft AGS-Series spark plugs Cylinder head comes semi-finished. Machining does not include valve seat bores Must be ported Bronze guides and valve seats included

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