USA vs USA — 1970 vs 1970
| Superbird 426 Hemi | Cyclone Spoiler | |
|---|---|---|
| Horsepower | 425 hp | 370 hp |
| Torque | 490 lb-ft | 480 lb-ft |
| Engine Size | 6,981 cc | 7,030 cc |
| 0-60 mph | 5.5 sec | 6.3 sec |
| Top Speed | 140 mph | 134 mph |
| ¼ Mile | 13.5 sec | 14.5 sec |
| Weight | 3,750 lbs | 3,800 lbs |
| Wheelbase | 2,946 mm | 2,972 mm |
| Length | 5,639 mm | 5,258 mm |
| Units Produced | 1,920 | 1,631 |
| Original MSRP | $4,298 | $3,795 |
| Value (Excellent) | $500,000 | $120,000 |
| Collectibility | 10/10 | 8/10 |
| Rarity | 10/10 | 8/10 |
The 1970 Plymouth Superbird 426 Hemi holds an edge across most measurable criteria, offering more power, quicker acceleration, higher top speed. That said, the 1970 Mercury Cyclone Spoiler brings better value and remains a compelling choice for enthusiasts who value Mercury heritage. The right pick depends on whether you prioritize specifications or the intangible qualities that make a car truly special.
The 1970 Plymouth Superbird 426 Hemi and 1970 Mercury Cyclone Spoiler stand as two of the most notable Muscle Car cars from Muscle era. Both emerged during a period of intense competition, and choosing between them remains a passionate debate among collectors. The 1970 Plymouth Superbird 426 Hemi holds a clear advantage in raw power with 425 hp compared to 370 hp, a 55-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Plymouth Superbird uses a V8 OHV (426 Hemi) displacing 6,981 cc, while the Mercury Cyclone relies on a V8 OHV with 7,030 cc. In the sprint to 60 mph, the 1970 Plymouth Superbird 426 Hemi edges ahead at 5.5 seconds versus 6.3 seconds. On the collector market, the 1970 Plymouth Superbird 426 Hemi commands a significant premium over the 1970 Mercury Cyclone Spoiler, reflecting differences in prestige and rarity. From a collectibility standpoint, the 1970 Plymouth Superbird 426 Hemi rates higher among enthusiasts and auction houses.