The '70 and '71 base and Gran Coupe models included buyer's choice of two different six-cylinder engines, a 198 cu. in. version and a 225 cu. in. unit. Plymouth also offered three V8 options: A 318 cu. in. model, a 383 cu. in. model with a two barrel carb, and a 383 cu. in. model with four-barrel carb and dual exhaust that turned out 330 horses. The 'Cuda Sport had a 383 cu. in. 335-horsepower engine standard, with optional 426 cu. in.Hemi and 440 cu. in. Super Commando packages available as well. The latter two offered both four-barrel and six-barrel carburetors. Horsepower ranged from 335 horsepower in the 383 to 425 horsepower in the 426 cu. in. engine. The 440 cu. SIX PACK produced 390 horse power.