BBM 240cc CNC Cylinder Head Assembled

CNC Street Ported, assembled aluminum cylinder head with 1.550" dual springs for Big Block Mopar engines. Made from A356-T61 aluminum, optimized runner shape, relocated oil holes, and enhanced rocker shaft areas for strength. Features 3/8" pushrod clearance, ductile iron valve seats, bronze alloy valve guides, and multi-angle valve seat machining. Assembled with 11/32" stainless steel valves, Trick Flow by PAC Racing valve springs, steel retainers, and 10° steel valve stem locks. Designed to use factory-style Big Block Mopar pistons, roller rocker arms, intake manifolds, and headers. Sold individually. Minimum bore size: 4.320 in. May require longer than stock pushrods.