Born from mutiny, raised on raw torque: the Hurst/Olds 455 was the biggest middle finger to GM’s ban on high-performance – ...

The Hurst-Olds 455 started rolling off the line for the 1968 model year. (Coincidence or not, the 4-4-2 was also promoted from a high-performance optional package to model status in 1968.) ...

Compared to the 2.000-inch intake and 1.625-inch exhaust valves in a conventional Olds 455, the W-43 used a pair of 1.75-inch intake and 1.375-inch exhaust valves, enabling the engine to process ...

Oldsmobile 4-4-2 W-30 versus Buick GS 455 Stage 1, A-body brothers each considered the “gentleman’s musclecar.” Sibling rivals when GM divisions competed.