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This Pro Action SBC aluminum head is pre-assembled with COMP Cams valve train components to support up to .600 valve lift for hydraulic roller camshafts and features 180cc a runner, 64cc combustion chamber and angle spark plug orientation.

These heads deliver significant gains in both power and torque for all Small Block Chevrolet applications right out of the box. Pro Action SBC Aluminum Cylinder Heads are the perfect choice for a variety of performance engines, including street rod, muscle car, oval track and drag racing applications. Standard features include a multi-angle Serdi valve job and the choice of a straight or angle plug configuration. Valve springs up to 1.550" and all standard rocker arms and valve train components are accepted.