2025 Ram 2500 Engine Specs from Twin City CDJRF | Lafayette, IN

On the jobsite or off-grid, the 2025 Ram 2500 stands ready to take on your most demanding tasks with power to spare. Whether you opt for the gas-powered HEMI® V8 or the available high-torque turbo diesel powertrain, the Ram 2500 boasts relentless performance designed to conquer the most challenging of towing and payload tasks when and where you demand it. Compare the 2025 Ram 2500 engine specs and see towing and payload charts in this detailed engine specifications guide from the team at Twin City Chrysler Dodge Jeep Ram FIAT.

Browse through our inventory to discover the 2025 Ram 2500 that will help you get the job done. Schedule a test drive of your preferred trim to get behind the wheel at our Lafayette, IN, dealership. Our Ram experts are here to answer any questions you may have. Call us at (765) 297-0127 or contact us online.

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2025 Ram 2500 Exterior Lineup Near Desert Mountain

2025 Ram 2500 Engine Comparison

Take on the toughest jobs with your choice of two commanding engine options, both bringing their A-game when it comes to relentless performance on — and off — the jobsite. The 6.4L HEMI V8 engine comes standard across all 2025 Ram 2500 trims, meeting the demands of your daily work endeavors. For even more hauling prowess, the available high-output 6.7L Cummins® turbo diesel inline six-cylinder (I6) brings exceptional torque to most trims in the lineup.

Learn more about each powertrain configuration to find the best option for your specific needs.

2025 Ram 2500 6.4L HEMI® V8 Engine Specs

When it’s solid and dependable performance you need, the 6.4L HEMI V8 engine delivers the goods for heavy-duty capability. With 405 horsepower and 429 pound-feet of torque, this gas-powered workhorse ensures confident acceleration and impressive towing and payload strength under pressure. Whether hauling trailers and heavy equipment on the road or off the asphalt, the 6.4L HEMI V8 powertrain stands ready to perform without compromise.

View 6.4L HEMI V8 engine specifications in the accompanying table.

  • Engine: 6.4L HEMI V8
  • Horsepower: 405 HP
  • Max. HP RPM: 5,600 RPM
  • Torque: 429 lb.-ft.
  • Max. Torque RPM: 4,000 RPM
  • Max. Engine Speed: 5,800 RPM
  • Drivetrain: 4x2 / 4x4
  • Transmission: Eight-speed 8HP75-LCV automatic
  • Oil Capacity: 7 qt.
  • Recommended Fuel: 87 octane unleaded
  • Trim Availability: Standard on all 2025 Ram 2500 trims

2025 Ram 2500 6.7L Cummins® Turbo-Diesel I6 Engine Specs

Bringing brute strength to your workday, the high-output 6.7L Cummins turbo diesel I6 engine boasts unrelenting durability and torque. Available across most of the Ram 2500 lineup, this potent powertrain integrates a newly optimized turbocharger and performance-tuned intake manifold to deliver an extraordinary 1,075 pound-feet of torque. Advanced design improvements reduce engine noise and vibration, providing a quieter, more composed ride under heavy load.

View 6.7L Cummins turbo diesel I6 engine specifications in the accompanying table.

  • Engine: High-output 6.7L Cummins I6 turbo diesel
  • Horsepower: 430 HP
  • Max. HP RPM: 2,800 RPM
  • Torque: 1,075 lb.-ft.
  • Max. Torque RPM: 1,800 RPM
  • Max. Engine Speed: 3,200 RPM
  • Drivetrain: 4x2 / 4x4
  • Transmission: TorqueFlite® HD eight-speed automatic
  • Oil Capacity: 12 qt.
  • Recommended Fuel: Ultra-low sulfur diesel
  • Trim Availability: Optional on most trims except Power Wagon®

2025 Ram 2500 Towing & Payload Charts

Does the job require you to tow some serious weight? The 2025 Ram 2500 features a 20,000-pound towing capacity with the high-output 6.7L Cummins turbo diesel I6 engine with the crew cab and 8-foot bed configuration. The available 6.4L HEMI V8 delivers impressive towing capability, reaching a 17,750-pound maximum tow rating with the regular cab, 8-foot bed, 4x2 drivetrain, and optional 4.10 axle ratio.

The 2025 Ram 2500 delivers formidable payload strength to support your toughest demands. When equipped with the 6.4L HEMI V8, a regular cab, 8-foot bed, and 4x2 configuration, the Ram 2500 achieves a maximum payload of 3,940 pounds. Opt for the available high-output 6.7L Cummins turbo diesel engine to handle up to 2,750 pounds of payload confidently.

See the Ram 2500 towing capacities by engine and available configuration in the accompanying tables.

Configuration6.4L HEMI V8 w/ 3.73 axle ratio6.4L HEMI V8 w/ optional 4.10 axle ratioHigh-output 6.7L Cummins I6 w/ 3.42 axle ratio
Regular cab w/ 8-ft. bed (4x2/4x4)15,550 / 15,240 lbs.17,750 / 17,440 lbs.N/A / 19,900 lbs.
Crew cab w/ 6-ft. 4-in. bed (4x2/4x4)15,220 / 14,930 lbs.17,420 / 17,130 lbs.19,960 / 19,890 lbs.
Crew cab w/ 8-ft. bed (4x2 / 4x4)15,080 / 14,730 lbs.17,280 / 16,930 lbs.20,000 / 18,320 lbs.
Mega Cab® w/ 6-ft. 4-in. bed (4x2/4x4)N/AN/AN/A / 15,680 lbs.

See the payload specifications of the 2025 Ram 2500 in the accompanying chart.

Configuration6.4L HEMI V8High-output 6.7L Cummins I6
Regular cab with 8-ft. bed (4x2/4x4)3,940 / 3,630 lbs.N/A / 2,740 lbs.
Crew cab with 6-ft. 4-in. bed (4x2/4x4)3,610 / 3,320 lbs.2,750 / 2,450 lbs.
Crew cab with 8-ft. bed (4x2/4x4)3,470 / 3,110 lbs.2,650 / 2,310 lbs.
Mega Cab with 6-ft. 4-in. bed (4x2/4x4)N/AN/A / 2,050 lbs.

2025 Ram 2500 Drivetrain & Transmission

Possessing immense power and all-terrain ruggedness, the 2025 Ram 2500 commands attention with its potent engine lineup, advanced suspension, and drivetrain systems. Choose between a standard 4x2 or available 4x4 drivetrain configuration on the Tradesman®, Big Horn®, Laramie®, Limited Longhorn®, and Limited trims. For enhanced off-road focus, the Rebel® and Power Wagon models feature standard 4x4 capability.

The 6.4L HEMI V8 matches with a high-performance eight-speed automatic transmission engineered for seamless shifting and confident acceleration. When equipped with the 6.7L Cummins I6 turbo diesel engine, the heavy-duty TorqueFlite HD eight-speed transmission delivers steady torque and dependable power needed for more demanding tow needs.

2025 Ram 2500 Available Axle Ratios and Suspension

Every 2025 Ram 2500 trim powered by the HEMI V8 gas engine is equipped with a standard 3.73 axle ratio and a three-link front suspension for confident handling. A five-link coil-spring suspension system in the rear enhances stability across rugged terrain. Trims powered by the Cummins turbo diesel engine benefit from a 3.42 axle ratio for optimized performance. The Power Wagon and select models matched with the HEMI engine offer a 4.10 axle ratio engineered for superior traction in demanding off-road conditions.

The Power Wagon features front and rear Tru-Lok® electronic-locking differentials to maintain grip on uneven terrain, while a lifted suspension with Bilstein® shocks and a disconnecting sway bar maximizes control. The Rebel trim comes equipped with a rear electronic-locking differential, providing confident traction in challenging conditions. For enhanced stability, an available auto-leveling rear air suspension adjusts ride height based on hitch weight for more streamlined trailer hookups and bed cargo loading.

2025 Ram 2500 Learn More About the Ram 2500

The Ram experts at Twin City CDJRF have prepared a range of research tools to further assist you in making an informed decision. For a more in-depth overview of the 2025 Ram 2500 and its key features, including interior amenities, cutting-edge technologies, exterior color options, and more, please refer to our comprehensive Ram 2500 review. Learn more about its standard features with this detailed Ram 2500 trims guide.

Questions? Give us a call at (765) 297-0127 or message us online.







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* Images, prices, and options shown, including vehicle color, trim, options, pricing and other specifications are subject to availability, incentive offerings, current pricing and credit worthiness.


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