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.