USA vs USA — 1971 vs 1963
| Riviera GS (Boattail) | Wildcat 455 Stage 1 | |
|---|---|---|
| Horsepower | 330 hp | 370 hp |
| Torque | 450 lb-ft | 510 lb-ft |
| Engine Size | 7,456 cc | 7,457 cc |
| 0-60 mph | 7.5 sec | 6.5 sec |
| Top Speed | 120 mph | 125 mph |
| ¼ Mile | 15.5 sec | 14.5 sec |
| Weight | — | 4,200 lbs |
| Wheelbase | 3,048 mm | 3,124 mm |
| Length | 5,523 mm | 5,562 mm |
| Original MSRP | — | $3,900 |
| Value (Excellent) | $55,000 | $60,000 |
| Collectibility | 5/10 | 7/10 |
| Rarity | 5/10 | 7/10 |
Numbers favor the 1963 Buick Wildcat 455 Stage 1 with more power, quicker acceleration, higher top speed. The 1971 Buick Riviera GS (Boattail) offers its unique character, and has its own devoted following. For those who let their heart decide, either car delivers a rewarding ownership experience.
Buick has long offered a diverse lineup, and comparing the 1971 Buick Riviera GS (Boattail) with the 1963 Buick Wildcat 455 Stage 1 highlights the breadth of the marque's engineering philosophy. The 1963 Buick Wildcat 455 Stage 1 holds a clear advantage in raw power with 370 hp compared to 330 hp, a 40-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Buick Riviera uses a V8 OHV 16V displacing 7,456 cc, while the Buick Wildcat relies on a V8 OHV with 7,457 cc. In the sprint to 60 mph, the 1963 Buick Wildcat 455 Stage 1 edges ahead at 6.5 seconds versus 7.5 seconds. Both trade at comparable values on the collector market, making the choice between them largely one of personal preference. From a collectibility standpoint, the 1963 Buick Wildcat 455 Stage 1 rates higher among enthusiasts and auction houses.