Columbus, Ind. – Cummins will release a High Output 6.7-liter Turbo Diesel for Ram Heavy Duty pickup trucks. This new rating of the Cummins ISB produces up to 800 lbs.-ft. of torque – equal to Ford's new class-leading 6.7-liter Powerstroke Diesel – at 1,600 rpm. Power is increased in the 1,200-to-2,700-rpm speed range, delivering up to 46 additional horsepower at typical highway cruising speeds. The engine continues to be rated at 350 hp at 3,000 rpm.
"The 6.7-liter Turbo Diesel’s base engine is the Cummins ISB, which is used in a variety of demanding applications and can produce significantly higher ratings than what is offered in pickup trucks," said Scott Henry, chief engineer for the Cummins Turbo Diesel. "From an engineering perspective, our work to develop the high-output rating for the 6.7-liter Turbo Diesel was in the advanced-performance tuning. The crankshaft dampener was the only engine part that we needed to change as a result of the increased torque."
Cummins will begin producing its High Output 6.7-liter Turbo Diesel engines at its Columbus MidRange Engine Plant (CMEP) in the second quarter of this year. They will be available in Ram Heavy Duty pickup trucks with the automatic transmission option.
"Eight hundred foot-pounds of torque is enormous force, and with the Cummins inline six-cylinder configuration, customers really get the best of both worlds," Henry stated. "They get high-output torque, along with the durability and low cost of ownership expected from an inline six. And this is still the only diesel in a heavy-duty pickup that doesn’t need Diesel Exhaust Fluid. The Cummins Turbo Diesel has produced decades of legendary performance in Ram Heavy Duty trucks, and will continue to be the best-in-class engine that customers can depend on for years to come."