Fits 5.0L and 5.8L Ford Racing blocks Raised intake and exhaust ports Used primarily in NASCAR and ARCA racing Intake and exhaust runners raised .400" over Yates C3 head Capable of 400 CFM intake, 267 CFM exhaust Accepts intake valves up to 2.180 diameter, exhaust valves up to 1.625 diameter Integral rocker pad for greater stiffness Cylinder head comes semi-finished. Combustion chamber and ports, unfinished Bronze guides and valve seat inserts included (not installed) Intake manifold mounting bolt holes 90° to mounting flange Use with M-9424-D451 or D452 intake manifold

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