Following last year's update of the light duty Ram 1500, the heavy duty Ram trucks get a refresh for 2025 with a redesigned Cummins 6.7L diesel and more tech

Powering the most basic Ram 2500 and 3500 pickups is still the 6.4-liter gasoline-burning Hemi V8, which drops 5 hp, now delivering 405 hp and 429 lb-ft of torque, pushed through an eight-speed ZF HD 8HP75 transmission.

The engine maker's new 6.7-liter Turbo Diesel for Ram Heavy Duty's line of pickups and cab-and-chassis trucks comes with news of an extended Cummins/Ram diesel partnership through 2030.

Cummins unveiled a new 2025 6.7-liter Turbo Diesel Pickup engine system for Ram Heavy Duty, along with its partners at Ram, on Wednesday.

Ram's heavy-duty pickups will continue to offer V8 power in the US, but the real news is an overhauled turbo-diesel inline six.

After getting booted from the 2025 Ram 1500 lineup, the 6.4-liter Hemi V8 engine carries on for the 2025 2500 and 3500 lineups with 405 horsepower and 429 lb-ft of torque. This mi

Ram's heavy-duty trucks receive a comprehensive refresh that includes new exterior styling and interior upgrades.

Ram has finally revealed its 2025 HD and Chassis Cab lineups, incorporating many of the flashy upgrades that have already hit the standard Ram 1500 pickup. But there’s more to this overhaul than a fancier cabin and a new grille.