Cummins Inc. announced the release of its High Output 6.7L Turbo Diesel for Ram heavy-duty pickup trucks. This new high-output rating produces peak torque of 800 lb-ft (1,085 N•m) at 1600 rpm, increasing power across a wide speed range of 1200-2700 rpm and delivering up to 46 additional hp at typical highway cruising speeds while maintaining 350 hp at 3000 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,” says 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 6.7L 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. Along with the new 800 lb-ft torque rating, the Cummins 6.7L Turbo Diesel continues to offer an integrated exhaust brake, which features a full 222 braking hp at the wheel.
“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 says. “They get high-output torque, along with the durability and low cost of ownership expected from an inline six.”