The top power was 275 horsepower for Duster 340 buyers, who received a four-barrel carburetor, heavy-duty suspension, and upgraded stopping power thanks to front discs, all in exchange for a $400 fee.

But compared to Plymouth’s 53,000 Duster 340s sold with just a six-month head start, Demon 340’s 20,000 units make it a far rarer beast today, despite the differences being purely cosmetic.

The next one down from the 340 V8 was the 318 V8 ... Since the Dodge Dart and the Plymouth Duster were such close siblings, it would be expected that some of the designs would be similar in ...

The Duster shared its engine lineup with the Valiant. It included a couple of inline-six powerplants and three small-block V8 units. The 340-cubic-inch (5.6-liter) V8 was the most potent option in ...

Prices shown are the prices you can expect to pay for a 1973 Plymouth Duster 2 Door Sport Coupe (340) across different levels of condition. Edit options.

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