While the lower compression ratio for the HO 6.7 seems counterintuitive, it allows Cummins to dial up the turbo boost pressures to make more power when needed while keeping emissions in check.
The 6.7L Cummins engine is known for its reliability and performance in heavy-duty trucks like the RAM 2500 and 3500 models. Yet even a diesel engine as impressive as this has room for improvement.
What Makes The HO 6.7 Cummins Turbo Diesel Engine So Good? When the High Output 6.7 Cummins Turbo Diesel came out in Ram trucks in 2019 it was the first in the class to have 1,000 lb-ft of torque.
Stellantis will offer two engine options, including a turbo diesel, for its 2025 Ram Heavy Duty pickups, the company said in a news release. A new available 6.7-liter Cummins High-Output Turbo ...