General Motors-owned Oldsmobile produced the Rocket 350-cubic-inch V-8 engine from 1968 to 1980. The Olds V-8 was unrelated to other GM 350 V-8s. GM often mixed and matched its 350s with different make and model cars. However, other than the Cadillac Seville, the Rocket 350 only powered Olds models. Although it was generally a dependable engine, the Rocket 350 suffered from a weak oil system and troublesome valve train.
The 1949 Oldsmobile Rocket 88 equipped with a 135-horsepower 303 V-8 was the grandfather of the Olds 350. Muscle car purists point to the Rocket 88 as the original muscle car, as Oldsmobile was the first to drop a powerful V-8 into a mid-size coupe. Ford had powered its 1932 coupes with a V-8, but the horsepower was only 65.