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.