USA vs USA — 1971 vs 1976
| Riviera GS (Boattail) | Regal Grand National | |
|---|---|---|
| Horsepower | 330 hp | 245 hp |
| Torque | 450 lb-ft | 355 lb-ft |
| Engine Size | 7,456 cc | 3,791 cc |
| 0-60 mph | 7.5 sec | 5.5 sec |
| Top Speed | 120 mph | 125 mph |
| ¼ Mile | 15.5 sec | 13.9 sec |
| Weight | — | 3,476 lbs |
| Wheelbase | 3,048 mm | 2,743 mm |
| Length | 5,523 mm | 5,067 mm |
| Units Produced | — | 20,193 |
| Original MSRP | — | $16,608 |
| Value (Excellent) | $55,000 | $75,000 |
| Collectibility | 5/10 | 9/10 |
| Rarity | 5/10 | 7/10 |
Two outstanding machines, each with compelling strengths. The 1971 Buick Riviera GS (Boattail) excels in more power, better value, while the 1976 Buick Regal Grand National stands out for quicker acceleration, higher top speed, stronger collectibility. The best advice? Drive both if you can, then follow your instincts.
The 1971 Buick Riviera GS (Boattail) and 1976 Buick Regal Grand National share a manufacturer in Buick, but that's where the similarities get interesting. These two models reveal the versatility and ambition of the Buick brand. The 1971 Buick Riviera GS (Boattail) holds a clear advantage in raw power with 330 hp compared to 245 hp, a 85-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 Regal relies on a V6 Turbocharged with 3,791 cc. In the sprint to 60 mph, the 1976 Buick Regal Grand National edges ahead at 5.5 seconds versus 7.5 seconds. From a collectibility standpoint, the 1976 Buick Regal Grand National rates higher among enthusiasts and auction houses.