Zipper’s Stage I WorkHorse Heads for Twin Cam® & Evolution® Engines

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As low as: $649.00

Price as configured: $0.00

Overview

Add Torque and Power to any production Twin Cam® or Evolution® head with our WorkHorse blueprinting service. After cleaning and Step-Lock guide installation and fitment, proprietary seat and valve machining improves flow and ensures a positive seal by truing now heat-seasoned seats and removing typical production chatter that leads to leaks between the seat and valve. This process improves even new, low mileage heads on engines that are being upgraded with cams or big bore kits. Valves are upgraded to Baisley 1.840” intakes and 1.615” exhausts with Viton seals, while new valve springs are set up for cam selection provided. Head gasket surfaces are skimmed to ensure absolute flatness. This Stage I head delivers a true, high quality “budget upgrade” for any engine.

In compliance with ARB emissions laws, this product is not sold or shipped to California.

Price as configured: $0.00

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