USA vs USA — 1989 vs 1973
| Firebird Trans Am GTA | Grand Am 455 V8 | |
|---|---|---|
| Horsepower | 250 hp | 250 hp |
| Torque | 350 lb-ft | 390 lb-ft |
| Engine Size | 5,735 cc | 7,456 cc |
| 0-60 mph | 5.4 sec | 8.0 sec |
| Top Speed | 150 mph | 118 mph |
| ¼ Mile | 14.0 sec | 15.8 sec |
| Weight | 3,400 lbs | 4,100 lbs |
| Wheelbase | 2,565 mm | 2,845 mm |
| Length | 4,978 mm | 5,334 mm |
| Units Produced | 16,700 | 56,063 |
| Original MSRP | $19,995 | $4,353 |
| Value (Excellent) | $38,000 | $32,000 |
| Collectibility | 7/10 | 6/10 |
| Rarity | 6/10 | 5/10 |
The 1989 Pontiac Firebird Trans Am GTA holds an edge across most measurable criteria, offering quicker acceleration, higher top speed, lighter weight. That said, the 1973 Pontiac Grand Am 455 V8 brings its own distinct appeal and remains a compelling choice for enthusiasts who value Pontiac heritage. The right pick depends on whether you prioritize specifications or the intangible qualities that make a car truly special.
The 1989 Pontiac Firebird Trans Am GTA and 1973 Pontiac Grand Am 455 V8 share a manufacturer in Pontiac, but that's where the similarities get interesting. These two models reveal the versatility and ambition of the Pontiac brand. On paper, the two are remarkably close in power output, with the 1989 Pontiac Firebird Trans Am GTA producing 250 hp and the 1973 Pontiac Grand Am 455 V8 delivering 250 hp. Under the hood, the contrast is notable: the Pontiac Firebird Trans Am uses a V8 OHV displacing 5,735 cc, while the Pontiac Grand Am relies on a V8 OHV (Pontiac 455) with 7,456 cc. In the sprint to 60 mph, the 1989 Pontiac Firebird Trans Am GTA edges ahead at 5.4 seconds versus 8.0 seconds. The Pontiac Firebird Trans Am carries a weight advantage, tipping the scales 700 lbs lighter. Rarity plays a significant role here — with only 16,700 units built, the 1989 Pontiac Firebird Trans Am GTA is considerably scarcer than the Pontiac Grand Am's 56,063 examples. Both trade at comparable values on the collector market, making the choice between them largely one of personal preference.