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Get ready to RUMBLE! The 2025 Ram 2500 HD and 3500 HD have a new Cummins turbo-diesel engine. It packs a serious torquey punch as it makes off-roading and towing easier than ever. 

The 2025 Ram 2500 HD has a new Cummins diesel engine 

Check out the revamped 2025 Ram 2500 HD and 3500 HD trucks. They provide stout power with the help of the new Cummins turbo-diesel engine. 

The  6.7-liter inline-six engine cranks out 430 hp and 1,075 lb-ft of torque. The engine is paired with an eight-speed automatic transmission. 

If you would rather go for gas, then check out the 6.4-liter HEMI V8. It cranks out 405 hp and 429 lb-ft of torque. It’s paired with a different eight-speed automatic transmission. 

With the Cummins diesel engine, the Ram 3500 HD can tow up to 37,090 lbs. Also, it can carry a payload of up to 6,560 lbs. With the HEMI V8 engine, this heavy-duty beast can tow up to 20,000 lbs. 

According to Car and Driver, the Ram HD truck can accelerate from 0 to 60 mph in under seven seconds. It’s expected to be quieter and smoother than before. 

Other new features include fish-eye lower mirrors, blind-spot warnings for the entire trailer length, an exhaust brake, and digital rearview mirrors. Off-roading variants like the Rebel and Power Wagon have a winch and an electronic front anti-roll-bar disconnect. 

Engine improvements include a bolt-on aluminum manifold for a longer intake, large exhaust valves, and a fuel pressure increase of 3000 psi to 32,000 psi total. It offers enhanced charge cooling and is more efficient.

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Staff Writer

Allison Barfield

Allison Barfield is a MotorBiscuit Staff Writer and covers all things Trucks and SUVs. Having grown up on a farm in Rock Hill, South Carolina, she’s no stranger to the “Best in Class” truck debates; people in her hometown were always gathering to help work on vehicles together, and deliberation would naturally arise.

Allison graduated from the University of South Carolina with a degree in Media Arts. She lives in a mountainous area of the country and enjoys off-roading and camping. Her dog, Bruce, often joins her on test drives.