1972 Plymouth Duster, 440 ci engine

The Duster was not changed significantly for 1972. New surface-mount sidemarker lights replaced the previous flush-mount items. the taillamps became larger. one-piece units. The power rating of the 340 V8 was reduced from 275 bhp (205 kW) to 245 hp (183 kW) due in part to a reduction in compression ratio from 10. 2:1 to 8. 5:1. as well as changing the intake valves from 2. 02 in (51 mm) to 1. 88 in (48 mm). [5] All horsepower rating numbers. even on unchanged engines. decreased for 1972 due to a new rating protocol. Chrysler's electronic ignition became standard on the 340 models in 1972