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

Part Number: 24502580

ALL  CYLINDER HEAD - Part Number 24502580
Cylinder Head Semi Finished Aluminum 18-Degree. These semi-finished ported aluminum 18-degree heads are designed for 350 9.1:1 compression NASCAR racing engines. The heads have additional 0.080-inch of material on the deck and 0.055-inch on the intake manifold flange to maintain port alignment. The heads come with 65-cc combustion chambers, but the deck surface can be machined to raise compression. The heads are recommended for 4.000-4.155-inch cylinder bores. Note: Requires 2.15-inch intake valves and 1.625-inch exhaust valves. GM Performance Parts cylinder heads are created with GM premium-engineering, then cast and machined to our exacting manufacturing standards. GMPP cylinder heads are available as bare castings or complete cylinder head from service replacement castings to all-out competition applications.
Semi Finished Aluminum 18-Degree 1966 1967 1968 1969 1970 1971 1972 1973 1974

Purchase