From 1961-1963, Oldsmobile manufactured its own version of the Buick-designed, all-aluminum 215 cubic inch V8 engine for the F-85 compact. Known variously as the Rockette, Cutlass, and Turbo-Rocket by Oldsmobile (and as Fireball and Skylark by Buick), it was a compact, lightweight engine measuring long, wide, and high (same as the small-block Chevy), with a dry weight of only . The Oldsmobile engine was very similar to the Buick engine, but not identical: it had larger wedge combustion chambers with flat-topped (rather than domed) pistons, six bolts rather than five per cylinder, and slightly larger intake valves; the valves were actuated by shaft-mounted rocker arms like the Buick and Pontiac versions, but the shafts and rockers were unique to Oldsmobile. With an 8.75:1 compression ratio and a 2-barrel carburetor, the Olds 215 had the same rated hp, at 4800 rpm, as the Buick 215, with of torque at 2400 rpm. With a 4-barrel carburetor and 10.25:1 compression, the Olds 215 made at 4800 rpm and at 3200 rpm with a manual transmission. With a 4-barrel carburetor and 10.75:1 compression, the Olds 215 made at 4800 rpm and at 3200 rpm with an automatic. The Buick version was rated at 200 hp with an 11:1 compression ratio.