PowerOval 280 Fast As Cast Top-End Engine Kit

The Trick Flow Specialties PowerOval 280 Fast As Cast Top-End Engine Kit (TFS-K413-580-560) is designed to unlock serious street/strip performance for your Big Block Chevrolet engine. The kit features Trick Flow PowerOval 280 cylinder heads, distinguished by their 113cc combustion chambers and assembled from durable cast aluminum with a natural finish. This complete top-end kit includes a Trick Flow Track Max hydraulic roller camshaft, specified with 0.600 inches of intake and exhaust valve lift, along with matching hydraulic roller lifters and chromoly pushrods. Complementing these are full roller rocker arms with a 1.7 ratio, a billet steel timing set for precise valvetrain synchronization, and all necessary cylinder head bolts and gasket sets for installation. The heads themselves boast 2.190-inch intake valves and 1.880-inch exhaust valves, housed within 280cc intake runners and 137cc exhaust runners. The valve springs are dual-wound with dampers, and the kit includes chromoly steel retainers and 10-degree locks, along with valve stem seals. This kit is specifically designed for Chevrolet Big Block engines, including sizes such as 6.5L/396, 6.6L/402, 7.0L/427, and 7.4L/454. It is compatible with Mark IV, Gen V, and Gen VI engine families, with specific model year ranges varying by engine size and family, generally spanning from the mid-1960s up to 2000. Please consult the detailed application guide to confirm fitment for your specific engine configuration. Note that intake manifold, carburetor, and throttle body are not included in this kit.