such as the Mopar 440 and the 440 Magnum. The Magnum was able to increase the engine’s output to 375 hp and the same torque. Over time, Mopar increased those Magnum numbers even more to 390 hp ...
This was a line that began in 1958 and lasted for 20 years, with the largest hitting the market being the Mopar 440 in 1966.