1966 1967 1968 1969 1970 1971 1972 1973 1974 ALL CYLINDER HEAD ASSEMBLY

Part Number: 12363400

ALL  CYLINDER HEAD ASSEMBLY - Part Number 12363400
Cylinder Head Assembly Signature Series Rectangular Port Aluminum. Rectangular port head made from 356-T6 aluminum alloy for 1965-2000 Mark IV and Gen V & VI 396, 427, 454, and 502 big-block engines with compression ratios below 12.5:1 high velocity 315-cc long intake runner and 300-cc short runners enhance mid-range torque and throttle response. Exhaust runner volume is 110cc. Semi-open 118-cc combustion chamber design provides very streetable compression ratios. Rocker studs and exhaust bolt holes are heli-coiled for strength. The 9/16-inch deck surface provides maximum strength and greater head gasket sealing. Intake and exhaust ports are in stock locations. Head assembly includes 2.25-inch stainless exhaust valves P/N 12366988, 1.55-inch valve springs P/N 12462970, valve spring retainers P/N 123366990, and oil seals P/N 12495690. These parts can be used for service replacement parts. Heads require cylinder bolt kit P/N 12367779. Note: Intelocking hardened valve seats will accept leaded or unleaded gas.
Signature Series Rectangular Port Alum 1966 1967 1968 1969 1970 1971 1972 1973 1974

Purchase