USA vs USA — 1971 vs 1970
| Road Runner 440+6 | Cyclone Spoiler | |
|---|---|---|
| Horsepower | 385 hp | 370 hp |
| Torque | 490 lb-ft | 480 lb-ft |
| Engine Size | 7,210 cc | 7,030 cc |
| 0-60 mph | 5.7 sec | 6.3 sec |
| Top Speed | 130 mph | 134 mph |
| ¼ Mile | 13.8 sec | 14.5 sec |
| Weight | 3,700 lbs | 3,800 lbs |
| Wheelbase | 2,946 mm | 2,972 mm |
| Length | 5,258 mm | 5,258 mm |
| Units Produced | 902 | 1,631 |
| Original MSRP | $3,540 | $3,795 |
| Value (Excellent) | $150,000 | $120,000 |
| Collectibility | 9/10 | 8/10 |
| Rarity | 8/10 | 8/10 |
Two outstanding machines, each with compelling strengths. The 1971 Plymouth Road Runner 440+6 excels in quicker acceleration, stronger collectibility, while the 1970 Mercury Cyclone Spoiler stands out for higher top speed. The best advice? Drive both if you can, then follow your instincts.
Among Muscle Car enthusiasts, the matchup between the 1971 Plymouth Road Runner 440+6 and 1970 Mercury Cyclone Spoiler is one for the ages. These Muscle era machines competed directly for buyers' attention and continue to vie for collectors' affections today. On paper, the two are remarkably close in power output, with the 1971 Plymouth Road Runner 440+6 producing 385 hp and the 1970 Mercury Cyclone Spoiler delivering 370 hp. In the sprint to 60 mph, the 1971 Plymouth Road Runner 440+6 edges ahead at 5.7 seconds versus 6.3 seconds. Both trade at comparable values on the collector market, making the choice between them largely one of personal preference.