USA vs USA — 1973 vs 1966
| Trans Am SD-455 | Chevy II Nova SS 396 | |
|---|---|---|
| Horsepower | 310 hp | 375 hp |
| Torque | — | 420 lb-ft |
| Engine Size | 7,456 cc | 6,489 cc |
| 0-60 mph | — | 5.9 sec |
| Top Speed | — | 130 mph |
| ¼ Mile | — | 13.9 sec |
| Weight | — | 3,300 lbs |
| Wheelbase | 2,746 mm | 2,794 mm |
| Length | 4,902 mm | 4,686 mm |
| Units Produced | 252 | — |
| Original MSRP | — | $2,990 |
| Value (Excellent) | $280,000 | $150,000 |
| Collectibility | 5/10 | 9/10 |
| Rarity | 10/10 | 8/10 |
The 1966 Chevrolet Chevy II Nova SS 396 emerges ahead in most objective measures, offering more power, stronger collectibility, better value. The 1973 Pontiac Trans Am SD-455 counters with its unique character, but the numbers favor its rival. Still, both are remarkable machines, and the final choice often comes down to which driving experience speaks to you.
Among Muscle Car enthusiasts, the matchup between the 1973 Pontiac Trans Am SD-455 and 1966 Chevrolet Chevy II Nova SS 396 is one for the ages. These Muscle era machines competed directly for buyers' attention and continue to vie for collectors' affections today. The 1966 Chevrolet Chevy II Nova SS 396 holds a clear advantage in raw power with 375 hp compared to 310 hp, a 65-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Pontiac Trans Am uses a V8 displacing 7,456 cc, while the Chevrolet Chevy II Nova SS relies on a V8 OHV with 6,489 cc. On the collector market, the 1973 Pontiac Trans Am SD-455 commands a significant premium over the 1966 Chevrolet Chevy II Nova SS 396, reflecting differences in prestige and rarity. From a collectibility standpoint, the 1966 Chevrolet Chevy II Nova SS 396 rates higher among enthusiasts and auction houses.