USA vs USA — 1970 vs 1973
| Cutlass Supreme SX 455 | Grand Am 455 V8 | |
|---|---|---|
| Horsepower | 320 hp | 250 hp |
| Torque | 460 lb-ft | 390 lb-ft |
| Engine Size | 7,456 cc | 7,456 cc |
| 0-60 mph | 7.0 sec | 8.0 sec |
| Top Speed | 120 mph | 118 mph |
| ¼ Mile | 15.2 sec | 15.8 sec |
| Weight | 3,750 lbs | 4,100 lbs |
| Wheelbase | 2,845 mm | 2,845 mm |
| Length | 5,182 mm | 5,334 mm |
| Units Produced | 16,833 | 56,063 |
| Original MSRP | $3,551 | $4,353 |
| Value (Excellent) | $65,000 | $32,000 |
| Collectibility | 7/10 | 6/10 |
| Rarity | 5/10 | 5/10 |
The 1970 Oldsmobile Cutlass Supreme SX 455 holds an edge across most measurable criteria, offering more power, quicker acceleration, higher top speed. That said, the 1973 Pontiac Grand Am 455 V8 brings better value 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.
Among Personal Luxury enthusiasts, the matchup between the 1970 Oldsmobile Cutlass Supreme SX 455 and 1973 Pontiac Grand Am 455 V8 is one for the ages. These Muscle era machines competed directly for buyers' attention and continue to vie for collectors' affections today. The 1970 Oldsmobile Cutlass Supreme SX 455 holds a clear advantage in raw power with 320 hp compared to 250 hp, a 70-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Oldsmobile Cutlass Supreme uses a V8 OHV (Oldsmobile 455) displacing 7,456 cc, while the Pontiac Grand Am relies on a V8 OHV (Pontiac 455) with 7,456 cc. In the sprint to 60 mph, the 1970 Oldsmobile Cutlass Supreme SX 455 edges ahead at 7.0 seconds versus 8.0 seconds. The Oldsmobile Cutlass Supreme carries a weight advantage, tipping the scales 350 lbs lighter. Whether you prioritize driving dynamics, heritage, or aesthetic appeal, both contenders make a strong case for themselves.