Introduced in 1966, the Chevelle SS396 package was Chevrolet’s entry into the muscle car brigade. A cousin to Pontiac’s GTO and the Oldsmobile 4-4-2, it was their equal in performance and specification, even if it did not have quite the image, perhaps because the SS nomenclature had been used for so long on so many different Chevrolets.
For 1970, the 396 engine was bored out to 402 cubic inches. However, in Chevelle models, it was still advertised as a 396, so the SS396 nomenclature was unchanged. It was listed as a Regular Production Option Z25, which comprised a 350 brake horsepower Turbo Jet 396, power front disc brakes, dual exhausts, a black grille, wheel opening moldings, a “power dome” hood, special suspension, 14x7 sport wheels with G70-14 white letter tires, and SS emblems on the front and rear. A Turbo Hydra-Matic and four-speed manual were the only transmission options. RPO Z25 retailed for $445.55.
350 bhp, 396 cu. in. OHV V-8 engine, three-speed automatic transmission, coil spring independent front suspension, live rear axle with trailing arm coil spring suspension, and disc-front, drum-rear power hydraulic brakes. Wheelbase: 112.0 in.