USA vs USA — 1976 vs 1959
| Regal Grand National | LeSabre Custom 401 Nailhead | |
|---|---|---|
| Horsepower | 245 hp | 325 hp |
| Torque | 355 lb-ft | 410 lb-ft |
| Engine Size | 3,791 cc | 6,571 cc |
| 0-60 mph | 5.5 sec | 9.5 sec |
| Top Speed | 125 mph | 115 mph |
| ¼ Mile | 13.9 sec | 16.5 sec |
| Weight | 3,476 lbs | 4,200 lbs |
| Wheelbase | 2,743 mm | 3,150 mm |
| Length | 5,067 mm | 5,562 mm |
| Units Produced | 20,193 | — |
| Original MSRP | $16,608 | $3,280 |
| Value (Excellent) | $75,000 | $55,000 |
| Collectibility | 9/10 | 6/10 |
| Rarity | 7/10 | 4/10 |
On balance, the 1976 Buick Regal Grand National makes a stronger case on paper with quicker acceleration, higher top speed, lighter weight. However, the 1959 Buick LeSabre Custom 401 Nailhead counters with more power, better value, and its appeal extends beyond mere numbers. Choose the 1976 Buick Regal Grand National for outright capability, or the 1959 Buick LeSabre Custom 401 Nailhead for a more distinctive ownership experience.
Buick has long offered a diverse lineup, and comparing the 1976 Buick Regal Grand National with the 1959 Buick LeSabre Custom 401 Nailhead highlights the breadth of the marque's engineering philosophy. The 1959 Buick LeSabre Custom 401 Nailhead holds a clear advantage in raw power with 325 hp compared to 245 hp, a 80-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Buick Regal uses a V6 Turbocharged displacing 3,791 cc, while the Buick LeSabre relies on a V8 OHV (Buick 401 Nailhead) with 6,571 cc. In the sprint to 60 mph, the 1976 Buick Regal Grand National edges ahead at 5.5 seconds versus 9.5 seconds. The Buick Regal carries a weight advantage, tipping the scales 724 lbs lighter. From a collectibility standpoint, the 1976 Buick Regal Grand National rates higher among enthusiasts and auction houses.