Only 2,116 Trans Ams were built in 1972, making this specific Pontiac 455 HO example a cornerstone collector's piece ...

Firebird sales increased in 1974, and the Trans Am more than doubled from the previous year. Pontiac sold over 73,700 units this year, and the base Firebird accounted for over 26,000 cars, remaining ...

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; ...

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 ...