Edelbrock Victor CNC GM LS7 12 Degree 6-Bolt Cylinder Head, 307cc, .220in Int Port, CI PM SeatEdelbrock Victor CNC LS7 Cylinder Heads are one of the first aftermarket high performance LS style heads to feature a raised intake runner design that fits both stock and aftermarket LS7 intake manifolds and valvetrain setups. The raised runner and rolled valve angle increase overall flow capability, while an improved water jacket design improves thermal conductivity. These premium 110 BHN 355 T6 aluminum alloy cylinder heads (#77699) are designed