The versatile ZZ4 350 adapted for Circle Track competition!

Renowned for its deep reserve of torque, responsive power and great dependability, the ZZ4 350 crate-engine is one of GM Performance Parts' most popular crate engines - and our engineers have adapted that combination as a winning, affordable racing engine in the CT355!

The CT355's strength lies in its ZZ4 bottom end, which includes a block with four-bolt mains, a forged-steel crankshaft and high-silicon pistons. A steel hydraulic roller camshaft actuates valves in the high-flow aluminum ZZ4 heads, which boast 163cc intake ports and 1.94/1.50-inch valves. This combination makes good power and great torque: 355 hp and 405 lb.-ft.

Like our other Circle Track crate engines, the CT355 includes a racing oil pan with a dual kick-out design. It also includes a valve cover breather kit, a special "kool nut' rocker arm nut design, a dual-plane aluminum high-rise intake manifold, cast iron water pump, HEI distributor and balancer, You add the carburetor, starter, spark plugs and wires - all available from Friesen Chevrolet.