USA vs USA — 1964 vs 1971
| Comet Cyclone CJ 428 | Demon 340 | |
|---|---|---|
| Horsepower | 335 hp | 275 hp |
| Torque | 440 lb-ft | 340 lb-ft |
| Engine Size | 7,014 cc | 5,572 cc |
| 0-60 mph | 6.2 sec | 6.5 sec |
| Top Speed | 130 mph | 123 mph |
| ¼ Mile | 14.1 sec | 14.5 sec |
| Weight | 3,502 lbs | 3,100 lbs |
| Wheelbase | 2,921 mm | 2,743 mm |
| Length | 5,131 mm | 4,928 mm |
| Units Produced | — | 10,098 |
| Original MSRP | $3,224 | $2,721 |
| Value (Excellent) | $85,000 | $80,000 |
| Collectibility | 7/10 | 7/10 |
| Rarity | 7/10 | 7/10 |
The 1964 Mercury Comet Cyclone CJ 428 holds an edge across most measurable criteria, offering more power, quicker acceleration, higher top speed. That said, the 1971 Dodge Demon 340 brings lighter weight and remains a compelling choice for enthusiasts who value Dodge heritage. The right pick depends on whether you prioritize specifications or the intangible qualities that make a car truly special.
The 1964 Mercury Comet Cyclone CJ 428 and 1971 Dodge Demon 340 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 1964 Mercury Comet Cyclone CJ 428 holds a clear advantage in raw power with 335 hp compared to 275 hp, a 60-horsepower difference that shapes the driving experience. In the sprint to 60 mph, the 1964 Mercury Comet Cyclone CJ 428 edges ahead at 6.2 seconds versus 6.5 seconds. The Dodge Demon carries a weight advantage, tipping the scales 402 lbs lighter. Both trade at comparable values on the collector market, making the choice between them largely one of personal preference.