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 Pontiac 455 H.O. sits at the crossroads of cubic-inch excess and the first real wave of emissions-era compromise, which ...

1971 brought little changes in terms of styling to the Trans Am series, but on the other hand, the bigger novelties happened inside and under the hood. New for model year 1971, for example, were the ...

There may not be any other Pontiac engine that harbors as much mystique as the Super-Duty 455. Introduced in '73 as a maximum-performance effort capable of sustained 6,000-rpm operation, it was ...

The Super Duty designation dates to Pontiac's successful early 1960s efforts in NASCAR and the NHRA, but it lay dormant for almost a decade. By 1970, the division's street machines, although wildly ...

Last year, a 1974 Trans Am, powered by its original Super Duty 455, and four-speed manual, changed hands at auction for a lofty $134,400. It was no run-of-the-mill used car, of course: two owners; ...

Buying a Pontiac Trans AM in the ’70s meant you were automatically cooler than you started off. It was the pre-Disco years equivalent of buying street cred. The Mecum Auction in Los Angeles this ...

The Muscle Car Wars hit their peak in 1970 with the final year of full-power madness from GM and Ford. MOPAR gave it one more year, then caved to the federal emissions and economy standards. In 1971, ...