USA vs USA — 1970 vs 1969
| AMX 390 Big Bad | Coronet R/T Convertible | |
|---|---|---|
| Horsepower | 325 hp | 375 hp |
| Torque | 425 lb-ft | 490 lb-ft |
| Engine Size | 6,391 cc | 7,210 cc |
| 0-60 mph | 6.6 sec | 6.2 sec |
| Top Speed | 130 mph | 130 mph |
| ¼ Mile | 14.4 sec | 14.3 sec |
| Weight | 3,300 lbs | 3,600 lbs |
| Wheelbase | 2,794 mm | 2,972 mm |
| Length | 4,877 mm | 5,232 mm |
| Units Produced | 4,116 | 259 |
| Original MSRP | $3,395 | $3,785 |
| Value (Excellent) | $65,000 | $145,000 |
| Collectibility | 8/10 | 9/10 |
| Rarity | 7/10 | 9/10 |
Numbers favor the 1969 Dodge Coronet R/T Convertible with more power, quicker acceleration, greater rarity. The 1970 AMC AMX 390 Big Bad offers lighter weight, better value, and has its own devoted following. For those who let their heart decide, either car delivers a rewarding ownership experience.
In the world of Muscle Car cars, few comparisons generate as much discussion as the 1970 AMC AMX 390 Big Bad versus the 1969 Dodge Coronet R/T Convertible. Both hail from Muscle era and represent the pinnacle of their respective manufacturers' ambitions. The 1969 Dodge Coronet R/T Convertible holds a clear advantage in raw power with 375 hp compared to 325 hp, a 50-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the AMC AMX uses a V8 OHV (AMC 390) displacing 6,391 cc, while the Dodge Coronet relies on a V8 OHV with 7,210 cc. In the sprint to 60 mph, the 1969 Dodge Coronet R/T Convertible edges ahead at 6.2 seconds versus 6.6 seconds. The AMC AMX carries a weight advantage, tipping the scales 300 lbs lighter. Rarity plays a significant role here — with only 259 units built, the 1969 Dodge Coronet R/T Convertible is considerably scarcer than the AMC AMX's 4,116 examples. On the collector market, the 1969 Dodge Coronet R/T Convertible commands a significant premium over the 1970 AMC AMX 390 Big Bad, reflecting differences in prestige and rarity.