Those changes gradually brought the 5.9 into the realm of the most potent diesel engines ever used in Dodge trucks. Dodge split Ram off into its own division in 2009, but for the purposes of ...
Moving up in the PACCAR line takes us to the MX-11, which is used in Peterbilt model 567 and 579 trucks. This 10.8-liter engine can put out as much as 430 horsepower and 1,650 pound-feet of torque.