Our billet big block Ford is the premium cylinder head for Big Block Ford engines. They feature 2.52 X 1.85 valve sizes, intake port flow approaching 580cfm, and they are a direct replacement for THOR II cast heads. These heads are available in either solid no water, full water, or full water with dry deck (pictured)

Chamber Size 80cc as machined
Seat Angles 50,52, or 55 depending on the application
Valve Stem Sizes 5/16 or 11/32
Valve Seats Proprietary high temp alloy
Pushrods 7/16 or 1/2
Rocker arms Jesel
Intake Manifolds Bennett Cast, Billet, or sheet metal manifold
Valvecovers Bennett sheet metal available

 

 

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