USA vs USA — 1958 vs 1955
| Impala SS 409 | Nomad Bel Air | |
|---|---|---|
| Horsepower | 425 hp | 225 hp |
| Torque | 425 lb-ft | 250 lb-ft |
| Engine Size | 6,702 cc | 4,343 cc |
| 0-60 mph | 6.3 sec | 10.5 sec |
| Top Speed | 125 mph | 105 mph |
| ¼ Mile | 14.2 sec | 17.5 sec |
| Weight | 3,800 lbs | — |
| Wheelbase | 2,997 mm | 2,921 mm |
| Length | 5,398 mm | 4,953 mm |
| Units Produced | — | 8,386 |
| Original MSRP | $3,261 | — |
| Value (Excellent) | $150,000 | $160,000 |
| Collectibility | 8/10 | 5/10 |
| Rarity | 7/10 | 7/10 |
On balance, the 1958 Chevrolet Impala SS 409 makes a stronger case on paper with more power, quicker acceleration, higher top speed. However, the 1955 Chevrolet Nomad Bel Air counters with its own distinct appeal, and its appeal extends beyond mere numbers. Choose the 1958 Chevrolet Impala SS 409 for outright capability, or the 1955 Chevrolet Nomad Bel Air for a more distinctive ownership experience.
Chevrolet has long offered a diverse lineup, and comparing the 1958 Chevrolet Impala SS 409 with the 1955 Chevrolet Nomad Bel Air highlights the breadth of the marque's engineering philosophy. The 1958 Chevrolet Impala SS 409 holds a clear advantage in raw power with 425 hp compared to 225 hp, a 200-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Chevrolet Impala uses a V8 OHV (W-series big-block) displacing 6,702 cc, while the Chevrolet Nomad relies on a V8 OHV 16V with 4,343 cc. In the sprint to 60 mph, the 1958 Chevrolet Impala SS 409 edges ahead at 6.3 seconds versus 10.5 seconds. From a collectibility standpoint, the 1958 Chevrolet Impala SS 409 rates higher among enthusiasts and auction houses.