USA vs USA — 1968 vs 1970
| Javelin SST 390 | AAR 'Cuda 340 Six Pack | |
|---|---|---|
| Horsepower | 315 hp | 290 hp |
| Torque | 425 lb-ft | 340 lb-ft |
| Engine Size | 6,391 cc | 5,572 cc |
| 0-60 mph | 6.8 sec | 5.8 sec |
| Top Speed | 125 mph | 125 mph |
| ¼ Mile | 14.8 sec | 14.0 sec |
| Weight | 3,200 lbs | 3,400 lbs |
| Wheelbase | 2,794 mm | 2,743 mm |
| Length | 4,877 mm | 4,871 mm |
| Units Produced | 56,462 | 2,724 |
| Original MSRP | $2,740 | $3,563 |
| Value (Excellent) | $45,000 | $180,000 |
| Collectibility | 7/10 | 9/10 |
| Rarity | 6/10 | 9/10 |
It's a closely fought contest. The 1968 AMC Javelin SST 390 brings lighter weight, better value to the table, and the 1970 Plymouth AAR 'Cuda 340 Six Pack answers with quicker acceleration, greater rarity, stronger collectibility. Both are excellent machines that reward their owners in different ways — there's no wrong answer here.
In the world of Pony Car cars, few comparisons generate as much discussion as the 1968 AMC Javelin SST 390 versus the 1970 Plymouth AAR 'Cuda 340 Six Pack. Both hail from Muscle era and represent the pinnacle of their respective manufacturers' ambitions. The 1968 AMC Javelin SST 390 holds a clear advantage in raw power with 315 hp compared to 290 hp, a 25-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the AMC Javelin uses a V8 OHV (AMC 390) displacing 6,391 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 6.8 seconds. Rarity plays a significant role here — with only 2,724 units built, the 1970 Plymouth AAR 'Cuda 340 Six Pack is considerably scarcer than the AMC Javelin's 56,462 examples. On the collector market, the 1970 Plymouth AAR 'Cuda 340 Six Pack commands a significant premium over the 1968 AMC Javelin SST 390, reflecting differences in prestige and rarity. From a collectibility standpoint, the 1970 Plymouth AAR 'Cuda 340 Six Pack rates higher among enthusiasts and auction houses.