USA vs USA — 1970 vs 1976
| GSX Stage 1 | Regal Grand National | |
|---|---|---|
| Horsepower | 360 hp | 245 hp |
| Torque | 510 lb-ft | 355 lb-ft |
| Engine Size | 7,456 cc | 3,791 cc |
| 0-60 mph | 5.5 sec | 5.5 sec |
| Top Speed | 125 mph | 125 mph |
| ¼ Mile | 13.4 sec | 13.9 sec |
| Weight | — | 3,476 lbs |
| Wheelbase | 2,845 mm | 2,743 mm |
| Length | 5,156 mm | 5,067 mm |
| Units Produced | 678 | 20,193 |
| Original MSRP | — | $16,608 |
| Value (Excellent) | $200,000 | $75,000 |
| Collectibility | 5/10 | 9/10 |
| Rarity | 8/10 | 7/10 |
Two outstanding machines, each with compelling strengths. The 1970 Buick GSX Stage 1 excels in more power, greater rarity, while the 1976 Buick Regal Grand National stands out for quicker acceleration, stronger collectibility, better value. The best advice? Drive both if you can, then follow your instincts.
The 1970 Buick GSX Stage 1 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 1970 Buick GSX Stage 1 holds a clear advantage in raw power with 360 hp compared to 245 hp, a 115-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Buick GSX 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 5.5 seconds. Rarity plays a significant role here — with only 678 units built, the 1970 Buick GSX Stage 1 is considerably scarcer than the Buick Regal's 20,193 examples. On the collector market, the 1970 Buick GSX Stage 1 commands a significant premium over the 1976 Buick Regal Grand National, reflecting differences in prestige and rarity. From a collectibility standpoint, the 1976 Buick Regal Grand National rates higher among enthusiasts and auction houses.