BY JACOB WHITE
A The Cummins powerplant was a homerun for Dodge clear back in the late ‘80s, when they first introduced it into their light duty truck lineup. That first-generation 12V motor didn’t make much power by today’s standards, but it was a reliable engine with lots of potential. As the years went on, the 5.9L Cummins engine just got better and better. The P7100 injection pump in 1994, introduction of electronic control in 1998, the switch to common-rail fuel injection in 2003, and then the major jump to an all-new, 6.7-liter, emissions-compliant version in 2007. The Dodge Cummins is nearing its 30th year of unity, and yet most Dodge Ram owners will agree the “weak link” has always been the automatic transmission.