The 455 HO was the icing on the GTO cake in 1972, with the engine producing 300 horsepower (this was the net rating, as Pontiac now aligned with the new requirements in the United States for engine ...

Ever hear how no fast cars were built after 1970? That perception existed at one time because General Motors lowered compression on all its motors in 1971, but time has a way of changing perceptions, ...

Nineteen-seventy is often considered the high-water mark of the muscle car era, but for whom? That was the year General Motors lifted its rule that limited A-body vehicles (Chevelle, Tempest, F-85, ...

Pressured by a constant onslaught of insurance-rate hikes, federal regulations, and parent corporation General Motors shifting away from high-performance vehicles, the Pontiac GTO returned for '72 but ...

First introduced in 1971, the 455 H.O. was a logical progression of the 400 cubic-inch Ram Air IV. Like the top-dog 400, the 455 featured 4-bolt mains and a cast crank, rods and pistons. Similarly, a ...

The year 1971 marked the beginning of the end for the original Pontiac GTO. It was the final year the fabled nameplate stood alone before becoming a mere option package on the LeMans. Emissions rules, ...