1970 was the year GM finally let Oldsmobile drop its biggest engine into the Cutlass 442, after years of a corporate ban on big-block mid-size cars. The standard 455 made 365 horsepower, but the W-30 option pushed that to 370 horsepower and a sub-15-second quarter mile. See the seven Cutlass body styles offered that year and the Rocket V8 that finally gave the 442 room to breathe.