Due to stricter government regulations, the era of unrestrained factory-built performance was coming to an end in 1971. However, GM's excitement division answered with the largest displacement engine ...

When Paul Rimsky-an IBM engineer from Mims, Florida, who was contracted to the NASA Saturn V project-bought his '71 455 H.O. Trans Am new on April 17, 1971, the words "classic," "rarity," and ...

The 1971 Pontiac Trans Am 455 HO arrived just as muscle cars were being choked by new emissions rules, rising insurance premiums, and a shift toward smaller, thriftier machines. Instead of retreating, ...

Pontiac was never good at letting go. Even as emissions strangled Detroit’s horsepower culture, the division that built the GTO refused to surrender quietly. And in 1975—against logic, policy, and ...