Chevrolet introduced its race-ready Camaro option, the Z/28, for the 1967 model year. It was powered by a 302 cu. in
V8 that narrowly missed the SCCA's 305 cubic inch limit. in.
Trans Am racing requires a specific engine. It also proven to be a real threat to the Boss 302
small-block in the Ford Mustang due to its size and power output.
The 302 engine continued to power the Z/28 in 1969, the final year for the first-generation Camaros.
However, it had a 12-bolt rear axle and a 4-speed Muncie gearbox with a new Hurst gearbox.
For this model year, Chevrolet also quadrupled the number of its 4-barrel Holley carburetors,