All models featured the federally-mandated 5 mile-per-hour front bumpers along with single headlights. Engine offerings were carried over from 1972 with revisions to meet the 1973 emission requirements. At least some of the Grand Am engine options were said to be derived from the research 1973 pontiac service manual that PMD engineers Herb Adams and Jeff Young did on the aborted 1969 Trans Am “303” project.
That earlier performance technology had resulted in a powerful V-8 that was quite happy with 91-octane fuel. It was now applied to the 455 cubic inch block to create an engine coded as the LS2 option. It produced 310 SAE NET Horsepower. Other optional V-8s were a 200 hp 400 cu. 2 barrel engine, a 230 hp 400 cu. 4 barrel engine, a 215 hp 455 cu.
2 barrel engine and finally a 250 hp 455 cu. Riding on a 112 inch wheelbase “Radial-Tuned Suspension” chassis was the Style Number 2AH37 Grand Am 2 door coupe. PMD officially called it a two door Notch Back Hardtop. 4,262 and listed a shipping weight of 3,992 lbs. The Grand Am dashboard was pirated from the Grand Prix series and was fully instrumented with Rally guages.