USA vs USA — 1967 vs 1970
| Cougar XR-7 GT-E 427 | AAR 'Cuda 340 Six Pack | |
|---|---|---|
| Horsepower | 390 hp | 290 hp |
| Torque | 440 lb-ft | 340 lb-ft |
| Engine Size | 6,997 cc | 5,572 cc |
| 0-60 mph | 5.9 sec | 5.8 sec |
| Top Speed | 135 mph | 125 mph |
| ¼ Mile | 13.8 sec | 14.0 sec |
| Weight | 3,400 lbs | 3,400 lbs |
| Wheelbase | 2,819 mm | 2,743 mm |
| Length | 4,887 mm | 4,871 mm |
| Units Produced | 394 | 2,724 |
| Original MSRP | $4,050 | $3,563 |
| Value (Excellent) | $200,000 | $180,000 |
| Collectibility | 9/10 | 9/10 |
| Rarity | 9/10 | 9/10 |
The 1967 Mercury Cougar XR-7 GT-E 427 holds an edge across most measurable criteria, offering more power, higher top speed, greater rarity. That said, the 1970 Plymouth AAR 'Cuda 340 Six Pack brings quicker acceleration and remains a compelling choice for enthusiasts who value Plymouth heritage. The right pick depends on whether you prioritize specifications or the intangible qualities that make a car truly special.
Among Pony Car enthusiasts, the matchup between the 1967 Mercury Cougar XR-7 GT-E 427 and 1970 Plymouth AAR 'Cuda 340 Six Pack is one for the ages. These Muscle era machines competed directly for buyers' attention and continue to vie for collectors' affections today. The 1967 Mercury Cougar XR-7 GT-E 427 holds a clear advantage in raw power with 390 hp compared to 290 hp, a 100-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Mercury Cougar uses a V8 OHV displacing 6,997 cc, while the Plymouth AAR 'Cuda relies on a V8 OHV (340 Six Pack) with 5,572 cc. In the sprint to 60 mph, the 1970 Plymouth AAR 'Cuda 340 Six Pack edges ahead at 5.8 seconds versus 5.9 seconds. Rarity plays a significant role here — with only 394 units built, the 1967 Mercury Cougar XR-7 GT-E 427 is considerably scarcer than the Plymouth AAR 'Cuda's 2,724 examples. Both trade at comparable values on the collector market, making the choice between them largely one of personal preference.