The Edelbrock part #77929 Big Block Chrysler Victor Series cylinder head is used by many of the best racers in the country and are the best choice for all-out competition. Edelbrock engineers work with leading racers like Billy Glidden, John Urist and Pat Musi to produce the ultimate components for racing. The end results is a competition ready cylinder head that features a cylinder head which is compatible with OE valve train and pistons for bolt-on convenience while Victor cylinder head features raised runners, revised chambers and relocated valves for all-out competition.VICTOR B/B CHRYSLER FEATURES:- The best standard port location cylinder head available for competition big-block Chryslers- Intake ports are raised .650", exhaust ports are raised .250" for improved flow- The intake flange is extended .950" to eliminate the need for intake spacer plates- Cylinder head will fit Edelbrock Victor manifolds for both high and low deck engines- Sold without springs or retainers; use recommended springs to match your camshaft- Exhaust flange is extended .300" from stock (same as Mopar Stage 6) featuring dry exhaust bolt holes with Heli-Coil thread inserts- 72cc combustion chamber volume- Cylinder head part #77939 comes bare with valves only