Over at Stellantis, the Ram truck brand relies on the 6.7-liter Cummins ISB inline-six turbo diesel. Similar to crosstown rival Ford, what used to be Chrysler offers the Cummins-developed engine ...

Consider past launches from Cummins — the QSB 5.9-liter common-rail diesel was introduced in 2004 at 380 hp. It increased to 425 hp in 2006 and finally to 480 hp in 2008. The larger 8.3-liter QSC grew ...