The Ram Power Wagon is the automaker’s heftiest version of its heavy-duty pickup truck, but with one huge caveat: there is no diesel engine available. According to a Ram powertrain engineer ...

A Cummins turbodiesel used to be available on the Ram Power Wagon, but for 2025, the only option is a 6.4-liter HEMI V8 that produces 405 horsepower and 429 lb-ft of torque.

The Ram Power Wagon Lunar edition is built on the most off-road capable pickup in the market, featuring the 6.4L HEMI® V-8 with 410 horsepower and 429 lb.-ft. of torque, front and rear locking ...

This is the 2023 Ram 2500 Power Wagon Crew Cab 4x4. Under that massive, raised hood is a 6.4-liter Hemi gas engine that is putting out 410-horses, and equally important, 427-pound feet of torque.