USA vs USA — 1984 vs 1963
| Grand National GNX | Riviera 1st Generation | |
|---|---|---|
| Horsepower | 276 hp | 325 hp |
| Torque | 360 lb-ft | 425 lb-ft |
| Engine Size | 3,791 cc | 6,571 cc |
| 0-60 mph | 4.7 sec | 8.0 sec |
| Top Speed | 125 mph | 120 mph |
| ¼ Mile | 13.4 sec | 15.5 sec |
| Weight | 3,500 lbs | — |
| Wheelbase | 2,743 mm | 3,023 mm |
| Length | 5,059 mm | 5,334 mm |
| Units Produced | 547 | 40,000 |
| Original MSRP | $29,290 | — |
| Value (Excellent) | $300,000 | $65,000 |
| Collectibility | 10/10 | 5/10 |
| Rarity | 9/10 | 5/10 |
The 1984 Buick Grand National GNX holds an edge across most measurable criteria, offering quicker acceleration, higher top speed, greater rarity. That said, the 1963 Buick Riviera 1st Generation brings more power, 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.
The 1984 Buick Grand National GNX and 1963 Buick Riviera 1st Generation 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 1963 Buick Riviera 1st Generation holds a clear advantage in raw power with 325 hp compared to 276 hp, a 49-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Buick Grand National uses a V6 OHV Turbocharged (Buick 3.8L) displacing 3,791 cc, while the Buick Riviera relies on a V8 OHV with 6,571 cc. In the sprint to 60 mph, the 1984 Buick Grand National GNX edges ahead at 4.7 seconds versus 8.0 seconds. Rarity plays a significant role here — with only 547 units built, the 1984 Buick Grand National GNX is considerably scarcer than the Buick Riviera's 40,000 examples. On the collector market, the 1984 Buick Grand National GNX commands a significant premium over the 1963 Buick Riviera 1st Generation, reflecting differences in prestige and rarity. From a collectibility standpoint, the 1984 Buick Grand National GNX rates higher among enthusiasts and auction houses.