Today, a major part of Cummins' reputation as a diesel engine manufacturer lies in the torquey inline-six turbodiesels that have faithfully powered the Ram heavy-duty pickup trucks since 1989. Some of ...

Cummins has been building pickup truck engines since 1989, which is when it first offered its legendary 359 cubic-inch inline-six engine known as the 6BT, often considered one of the best American ...