Dart 11520020P Pro 1 Chevrolet small block aluminum cylinder heads. Features 215cc intake ports and 64cc chamber volume. Straight plugs. Accepts 2.05" intake and 1.60" exhaust valves.
Cast from virgin 355-T6 aerospace alloy for superior strength and integrity.
Standard valve angle and spacing are retained. Accomodates all stock accessories.
Heart shaped chambers improve combustion efficiency and fit most standard pistons.
Multi-angle intake seats and radiused exhaust seats dramatically increase air flow.
Hardened exhaust seats are compatible with unleaded gasoline. Manganese bronze valve guides for extended cylinder head life.
Raised exhaust port roof improves flow while retaining standard port location and bolt pattern.
Spark plug holes are machined for gasketed 3/4" reach plugs. Dual exhaust bolt pattern is provided for easy header fitment.
Sold As 2 Cylinder Heads
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