[Oldsguy]

No, the term rocket was used by Oldsmobile PR people to refer to the V8 engine. I am not sure if this started in 1949 with the introduction of the first V8 Oldsmobile had but know that by the fifties that term was common. Now, all Oldsmobile V8's are referred to as a rocket, although not always and not by everyone. It is sort of redundant to say "rocket V8", sort of like saying "round ball". Super 88 was also a PR invention. So the recommendation of 57RCKT would be appropriate, describing your 1957 Oldsmobile, since it has a V8 engine, sort of identifies it as an Olds.