USA vs USA — 1963 vs 1966
| Riviera 425 Nailhead | Toronado 455 | |
|---|---|---|
| Horsepower | 340 hp | 400 hp |
| Torque | 465 lb-ft | 500 lb-ft |
| Engine Size | 6,965 cc | 7,456 cc |
| 0-60 mph | 7.7 sec | 7.5 sec |
| Top Speed | 125 mph | 135 mph |
| ¼ Mile | 15.5 sec | 15.5 sec |
| Weight | 4,200 lbs | 4,600 lbs |
| Wheelbase | 3,048 mm | 3,048 mm |
| Length | 5,334 mm | 5,365 mm |
| Units Produced | 40,000 | 40,963 |
| Original MSRP | $4,333 | $4,617 |
| Value (Excellent) | $85,000 | $65,000 |
| Collectibility | 8/10 | 7/10 |
| Rarity | 5/10 | 5/10 |
Two outstanding machines, each with compelling strengths. The 1963 Buick Riviera 425 Nailhead excels in lighter weight, stronger collectibility, while the 1966 Oldsmobile Toronado 455 stands out for more power, quicker acceleration, higher top speed. The best advice? Drive both if you can, then follow your instincts.
Among Personal Luxury enthusiasts, the matchup between the 1963 Buick Riviera 425 Nailhead and 1966 Oldsmobile Toronado 455 is one for the ages. These Muscle era machines competed directly for buyers' attention and continue to vie for collectors' affections today. The 1966 Oldsmobile Toronado 455 holds a clear advantage in raw power with 400 hp compared to 340 hp, a 60-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Buick Riviera uses a V8 OHV (Buick 425 Nailhead) displacing 6,965 cc, while the Oldsmobile Toronado relies on a V8 OHV (Oldsmobile 455 Rocket) with 7,456 cc. In the sprint to 60 mph, the 1966 Oldsmobile Toronado 455 edges ahead at 7.5 seconds versus 7.7 seconds. The Buick Riviera carries a weight advantage, tipping the scales 400 lbs lighter. Both trade at comparable values on the collector market, making the choice between them largely one of personal preference.