ZZ383 Deluxe

More power from Chevrolet PerformanceÍs classic Small-Block stroker! Chevrolet PerformanceÍs big-torque ZZ383 is more powerful than ever. WeÍve added revised cylinder heads that incorporate a new, high-rpm valvetrain to help the ZZ383 produce 450 horsepower and 450 lb.-ft. of torque _ 25 hp and 25 lb.-ft. more than the previous version! The new, lightweight aluminum cylinder head casting is based on the proven Fast Burn design, with large intake runners and 2.00/1.55- inch valves. New beehive-style valve springs enable greater high-rpm performance and durability. They allow the ZZ383 to rev higher, building more power to complement its low-rpm torque.