The engine bay of the Oldsmobile Starfire convertible houses a 394 CI V-8 engine making 330 horsepower. The Ultra-High Compression (10.25:1) V8 is dressed with some chrome factory bits.

The engine under the roof is the 394 Rocket V8 installed by Oldsmobile before the car rolled off the assembly lines. ... The 394 was the only engine available on the 1964 Starfire.

That Olds Feeling. There were no lowly six-cylinder engines for the 1959 Oldsmobiles— leave those to Communists and bargain hunters! ... and the Super 88s got a 394 good for 315 horsepower.

The carmaker also refreshed the engine lineup, upgrading the output of the standard engine to 280 horsepower. The Sky Rocket unit, which came as a 394 (6.5-liter) offered standard on the Super 88 ...

On top of that, it had its own engine made and for some reason wasn’t able to use the 394 cubic-inch V8 that all the other Oldsmobile full-size muscle cars were given.