1973 Pontiac Grand Am: Pontiac's European Sedan Meets the Energy Crisis

Near the end of the 1973 model year, a Pontiac options report dated August 16, 1973, recorded something Pontiac had announced and the assembly lines had almost never delivered: one intermediate A-body car built with the LS2 Super Duty 455. Rocky Rotella's research at PontiacV8.com, using a factory-to-dealer invoice from PHS Automotive Services, identifies it as a Cameo White Grand Am with a Turbo Hydra-Matic 400. The Super Duty had been announced for Pontiac's intermediates but went, apart from that single car, only into the Firebird. The lone SD-455 Grand Am is the rarest footnote of a car whose real story is the 43,000 others.^1,2

The Grand Am was new for 1973, built on General Motors' new Colonnade A-body as a coupe and a four-door sedan. Its name joined the Grand of the Grand Prix to the Am of the Trans Am, and Wikipedia records that Pontiac pitched it as America's answer to European luxury and sport sedans. The argument was that foreign makers such as Mercedes-Benz and BMW had learned to combine comfort with performance, while American cars usually offered one or the other. Pontiac's answer borrowed from both of its own specialty cars: the Grand Prix's instrument panel and the Trans Am's attention to handling.^3,4,2

The face was the conversation piece. Hagerty's account describes a body-color, injection-molded urethane Endura nose over the five-mph bumper, and Wikipedia notes that it could be squeezed and would spring back after a minor impact. Inside, the Grand Prix-derived instrument panel carried genuine Crossfire Mahogany trim, which became imitation wood from 1974. Reclining front seats were standard. Underneath, the Radial Tuned Suspension combined GR70-15 radial tires with anti-roll bars of 1.12 inches at the front and 0.94 inches at the rear, and Wikipedia counts the Grand Am as one of only three General Motors cars with standard radial tires that year.^4,3,2

One piece of the plan never reached customers. Pontiac's engineers developed a functional ram-air hood with twin NACA-style openings, but Wikipedia reports that it was dropped because it could not pass the federal drive-by noise standard; the twin-scoop hood stayed on the option list through 1975 as decoration. The Super Duty's fate was similar. It appeared in the announcements and reached one Grand Am. Both are reminders that 1973 was a year when the rules governing noise, emissions and bumpers were deciding what a performance car could be, and the Grand Am was designed into that world rather than surviving from an earlier one.^3,1

The engine ladder was written in net horsepower. The standard L65 400 two-barrel made 170 horsepower and came with the Turbo Hydra-Matic. For $46 a buyer could have the L78 400 four-barrel at 200 horsepower, or 230 with the $30 dual exhausts, and above that sat the L75 455 four-barrel at 215 horsepower, or 250 with duals. The four-speed manual came only with the 400 four-barrel and was priced as a $46 credit against the automatic. A tachometer cost $51 and honeycomb wheels $73. One documented coupe with a base price of $4,263.50 left the factory at $5,240.50, which gives a sense of how the option sheet added up.^2,4

The production figures are unusually detailed for a car of this era. Curbside Classic counts 43,137 Grand Ams for 1973, Hagerty and Wikipedia's prose 43,136; Wikipedia's body table gives 34,446 coupes and 8,691 sedans, which sum to the higher figure, and the one-car difference is unexplained. By either count about four in five were coupes. Curbside Classic reports 17,872 cars with one of the optional engines, about 41 percent, but does not split them between the 400 four-barrel and the 455. Rotella, working from Pontiac car-distribution notes supplied by retired employee Fred Simmonds, counts 1,058 four-speeds, 971 coupes and 87 sedans, about 2.5 percent of the year.^2,4,3,5,6

Those four-speeds matter beyond their number. Pontiac's Factory-Installed Options and Accessories reports, as Rotella cites them, count 2,424 four-speed A-cars across the division for 1973, so the Grand Am, a luxury-leaning sedan and coupe, accounted for about 44 percent of the stick-shift intermediates Pontiac built that year. The GTO was by then an option on the Colonnade LeMans, and the Standard Catalog figures reproduced by MuscleCarClub.com count 4,806 of them. The Grand Am outsold it roughly nine to one, and Curbside Classic asked, in a 2026 headline, whether the 400-4V four-speed Grand Am should have been the 1973 GTO.^5,7,2

Road & Track tested a Grand Am in 1973, and Curbside Classic's summary of that test gives a sober picture of the base car. With the 400 two-barrel and automatic, the magazine's car reached 60 mph in 10.3 seconds and averaged 11 mpg. The test rode on the 112-inch coupe wheelbase. Those figures belong to that one car in its standard specification; the optional engines offered up to 80 more net horsepower, and their effect on the stopwatch is not recorded in this test. The European-sedan argument, on these numbers, rested more on the chassis and the cabin than on the stopwatch.⁸

Then the world changed. Wikipedia ties what followed to the 1973 oil crisis and the rising price of gasoline: Grand Am production fell to 17,083 for 1974, down by more than half, and to 10,679 for 1975. Pontiac planned rectangular headlamps for 1976, which would have required a completely new Endura nose, and given the low volume officials judged the expense not worth it. The Grand Am was dropped after 1975. The 1973 car therefore stands as the only year the idea was sold into the market it was designed for.³

Seen from 1973, the Grand Am looks like Pontiac's attempt to carry the performance idea through the new rules rather than around them: radial tires, real anti-roll bars, an optional four-speed behind a 400 four-barrel, and even a Super Duty on the order form. The buyers who took the four-speed number barely a thousand, and only one took the Super Duty, but more than 17,000 paid for a bigger engine and more than 43,000 bought the idea. It was the best year the first Grand Am would have, and in 1973 it was a far bigger business for Pontiac than the GTO.^2,5,1,7