USA vs USA — 1964 vs 1974
| GTO 389 Tri-Power | Firebird Super Duty 455 | |
|---|---|---|
| Horsepower | 348 hp | 290 hp |
| Torque | 428 lb-ft | 400 lb-ft |
| Engine Size | 6,375 cc | 7,456 cc |
| 0-60 mph | 6.6 sec | 5.9 sec |
| Top Speed | 125 mph | 124 mph |
| ¼ Mile | 14.8 sec | 13.8 sec |
| Weight | 3,400 lbs | 3,700 lbs |
| Wheelbase | 2,921 mm | 2,768 mm |
| Length | 5,181 mm | 5,073 mm |
| Units Produced | 32,450 | 943 |
| Original MSRP | $2,852 | $4,446 |
| Value (Excellent) | $120,000 | $175,000 |
| Collectibility | 9/10 | 9/10 |
| Rarity | 5/10 | 9/10 |
The 1964 Pontiac GTO 389 Tri-Power holds an edge across most measurable criteria, offering more power, higher top speed, lighter weight. That said, the 1974 Pontiac Firebird Super Duty 455 brings quicker acceleration, greater rarity 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.
Within the Pontiac stable, the 1964 Pontiac GTO 389 Tri-Power and 1974 Pontiac Firebird Super Duty 455 represent different approaches to performance and purpose. Both carry the Pontiac badge, yet each carves out its own distinct identity. The 1964 Pontiac GTO 389 Tri-Power holds a clear advantage in raw power with 348 hp compared to 290 hp, a 58-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Pontiac GTO uses a V8 OHV (Pontiac 389) displacing 6,375 cc, while the Pontiac Firebird relies on a V8 OHV with 7,456 cc. In the sprint to 60 mph, the 1974 Pontiac Firebird Super Duty 455 edges ahead at 5.9 seconds versus 6.6 seconds. The Pontiac GTO carries a weight advantage, tipping the scales 300 lbs lighter. Rarity plays a significant role here — with only 943 units built, the 1974 Pontiac Firebird Super Duty 455 is considerably scarcer than the Pontiac GTO's 32,450 examples.