USA vs USA — 1970 vs 1971
| GSX Stage 1 455 | Riviera GS (Boattail) | |
|---|---|---|
| Horsepower | 360 hp | 330 hp |
| Torque | 510 lb-ft | 450 lb-ft |
| Engine Size | 7,456 cc | 7,456 cc |
| 0-60 mph | 5.5 sec | 7.5 sec |
| Top Speed | 130 mph | 120 mph |
| ¼ Mile | 13.4 sec | 15.5 sec |
| Weight | 3,600 lbs | — |
| Wheelbase | 2,845 mm | 3,048 mm |
| Length | 5,156 mm | 5,523 mm |
| Units Produced | 678 | — |
| Original MSRP | $3,283 | — |
| Value (Excellent) | $250,000 | $55,000 |
| Collectibility | 9/10 | 5/10 |
| Rarity | 8/10 | 5/10 |
The 1970 Buick GSX Stage 1 455 holds an edge across most measurable criteria, offering quicker acceleration, higher top speed, stronger collectibility. That said, the 1971 Buick Riviera GS (Boattail) brings better value and remains a compelling choice for enthusiasts who value Buick heritage. The right pick depends on whether you prioritize specifications or the intangible qualities that make a car truly special.
Within the Buick stable, the 1970 Buick GSX Stage 1 455 and 1971 Buick Riviera GS (Boattail) represent different approaches to performance and purpose. Both carry the Buick badge, yet each carves out its own distinct identity. The 1970 Buick GSX Stage 1 455 holds a clear advantage in raw power with 360 hp compared to 330 hp, a 30-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Buick GSX uses a V8 OHV (Buick 455 Stage 1) displacing 7,456 cc, while the Buick Riviera relies on a V8 OHV 16V with 7,456 cc. In the sprint to 60 mph, the 1970 Buick GSX Stage 1 455 edges ahead at 5.5 seconds versus 7.5 seconds. On the collector market, the 1970 Buick GSX Stage 1 455 commands a significant premium over the 1971 Buick Riviera GS (Boattail), reflecting differences in prestige and rarity. From a collectibility standpoint, the 1970 Buick GSX Stage 1 455 rates higher among enthusiasts and auction houses.