World Products Merlin cylinder heads for big Chevys combine large intake runners with open combustion chambers to produce good torque and low-end power. The heads are available assembled or bare; rectangular or oval; with or without intake/exhaust valves; and other options. Order the model that best suits your application.

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Trick Flow Cylinder Head, Porter Head, Unfinished, GenX 220, Aluminum, Bare, For Chevrolet, For Pontiac, 5.7L LS1, Each

Trick Flow Cylinder Head, Porter Head, Unfinished, GenX 220, Aluminum, Bare, For Chevrolet, For Pontiac, 5.7L LS1, Each

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