Pontiac Grand Am 455 V8
The original Pontiac Grand Am was an ambitious attempt to create an American gran turismo — a car that combined the comfort and power of a luxury coupe with the handling precision of a European sport sedan. Introduced for 1973, it arrived at perhaps the worst possible moment, just as the OPEC oil embargo was about to crush the big-engine personal luxury car market.
The Grand Am's concept was ahead of its time. It was built on the A-body intermediate platform but equipped with features unusual for American cars of the era: radial tires as standard equipment, a specially tuned suspension with front and rear anti-roll bars, and the body-colored Endura flexible front end treatment that gave it a distinctly European look. The interior featured deeply contoured bucket seats and a driver-focused instrument panel.
The powertrain options reflected Pontiac's muscle car heritage. The base engine was the 400 cubic inch V8, but the optional 455 cubic inch V8 producing 250 SAE net horsepower (and a substantial 390 lb-ft of torque) transformed the Grand Am into a genuine high-speed cruiser. Despite its considerable 4,100-pound curb weight, the 455-equipped Grand Am could reach 60 mph in approximately 8 seconds — respectable performance for the emissions-strangled early 1970s.
The Grand Am was offered as both a two-door colonnade coupe and a four-door sedan, with the coupe being far more popular. Build quality was typical of 1970s GM products — adequate but not exceptional. The Endura nose, while visually distinctive, was prone to paint matching issues and could look worn after a few years of UV exposure.
Sales were disappointing. The 1973 model moved 43,136 units (combined coupe and sedan), which dropped to 17,083 for 1974 and a dismal 10,673 for 1975. The combination of rising fuel prices, increasing insurance costs, and tightening emissions regulations made a big-engine personal luxury car a tough sell. Pontiac discontinued the Grand Am after 1975, though the name would return in 1978 and again in 1985 on very different vehicles.
Today, the first-generation Grand Am is appreciated as one of the last expressions of Pontiac's performance ambition before the malaise era fully took hold. The 455-equipped coupes are the most desirable, offering a unique combination of Euro-influenced style and traditional American V8 muscle.
First-generation Grand Ams are relatively affordable collectibles. The unique Endura nose is the most problematic area — look for cracks, paint delamination, and poor color match from previous repairs. The Colonnade body is prone to rust in the lower quarters, rocker panels, and around the rear window. The 455 V8 is robust but parts specific to the 1973 emissions-controlled version can be tricky. Interior pieces unique to the Grand Am (contoured seats, dash trim) are scarce. Many Grand Ams have been neglected or modified; finding an original, well-preserved example is worthwhile even at a premium.
1973: 43,136 total (34,443 coupes, 8,693 sedans). 1974: 17,083 total. 1975: 10,673 total. The 455 V8 was available only in 1973. For 1974-75, the largest available engine was the 400 V8. The Grand Am was built on GM's A-body/Colonnade platform shared with the Chevelle, Cutlass, and Century.