For 1978 Dodge introduced the Mitsubishi 6DR5 diesel engine to its truck and van lineups as an optional economic engine. The 4-liter inline six-cylinder ... introduced the Cummins 6BT-powered ...

It has a 1-inch thick aluminum deck plate, but it essentially starts as a 6.7 Cummins engine. Eventually, it was sleeved to a 4125 cylinder bore to give it a displacement of 6.4 liters.

Columbus, IN - Cummins Inc. announced today that the mechanical B3.3 engine will move forward to meet Tier 4 Final emissions standards in 2013 with a particulate filter aftertreatment system ...