Cars & Vehicles Auto Racing

Chevy DZ302 Specs

    • The DZ 302 engine was manufactured by Chevrolet during the late 1960s. It was used to power Chevrolet's sport's car, the Camaro. The Camaro has been in production since 1966 and is regarded as a classic muscle and pony car.

    Engine Specifications

    • The engine used a V-8 cylinder layout. The bore by stroke was 4 by 3 inches while the compression ratio was 11-to-1. The crank and rod were both forged and the head casting number was 186. The rod ratio was 1.753-to-1 and the rod length was 5.7 inches. The total chamber volume was 61 to 64 cc and the valve sizes was 2.02 and 1.6. The DZ 302 also used a four-bolt main block.

    Engine Performance

    • The DZ 302 had a maximum displacement of 302 cubic-inches, or 5 liters. The rated power output of the DZ 302 was 290 horsepower at 5,800 rpm while the rated torque output was 290 foot-pounds at 4,200 rpm. However, the engine could surpass the rated horsepower and reach approximately 350 horsepower at 6,700 rpm and torque levels of 333 foot-pounds at 4,400 rpm. The peal flow rates of the engine during intake was 210 and during exhaust it was 146. The camshaft gross lift was .485, the cam lobe separation was 114 and the .05 cam duration was 254.

    Engine Features

    • The DZ 302 used screw-in studs as well as a guide-plates. The cam used a solid design. The intake manifold used a dual-plane and was made of aluminum. For the fuel system, the engine used four BC Holley 4150 4V carburetors and the carb rating was 780 cfm. The transmission was a four-speed manual.



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