The 2025 Ram 2500/3500 Crew Cab Long II, specifically the 2500 model equipped with the 6.7-liter Cummins High Output (HO) diesel engine producing 430 horsepower and paired with a TorqueFlite 8-speed automatic transmission and a 4×4 drivetrain, represents a significant offering in the heavy-duty pickup truck segment. Introduced as part of the DT facelift for the 2025 model year, this configuration builds upon the established reputation of the Ram heavy-duty line for capability, comfort, and technology. It slots into the lineup as a high-performance option, positioned above the standard output Cummins engine and aimed at buyers needing substantial towing and hauling capacity without sacrificing everyday drivability.
Technical Specifications
| Brand | RAM |
| Model | 2500/3500 |
| Generation | 2500/3500 Crew Cab Long II (DT, facelift 2025) |
| Type (Engine) | 2500 6.7 Cummins HO (430 Hp) 4×4 TorqueFlite |
| Start of production | 2025 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 5-6 |
| Doors | 4 |
| Fuel Type | Diesel |
| Weight-to-power ratio | 8.3 kg/Hp, 120.3 Hp/tonne |
| Weight-to-torque ratio | 2.5 kg/Nm, 408.1 Nm/tonne |
| Power | 430 Hp @ 2800 rpm |
| Power per litre | 64.3 Hp/l |
| Torque | 1458 Nm @ 1800 rpm (1075.37 lb.-ft. @ 1800 rpm) |
| Maximum engine speed | 3200 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | Cummins |
| Engine displacement | 6690 cm3 (408.25 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 107 mm (4.21 in.) |
| Piston Stroke | 124 mm (4.88 in.) |
| Compression ratio | 16.2:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | OHV |
| Engine oil capacity | 11.3 l (11.94 US qt | 9.94 UK qt) |
| Coolant | 22.5 l (23.78 US qt | 19.8 UK qt) |
| Kerb Weight | 3573-3578 kg (7877.12 – 7888.14 lbs.) |
| Max. weight | 4491-4622 kg (9900.96 – 10189.77 lbs.) |
| Max load | 918-1044 kg (2023.84 – 2301.63 lbs.) |
| Trunk (boot) space – minimum | 2100 l (74.16 cu. ft.) |
| Fuel tank capacity | 121 l (31.96 US gal | 26.62 UK gal) |
| Permitted trailer load with brakes (12%) | 8269 kg (18230.02 lbs.) |
| Length | 6626 mm (260.87 in.) |
| Width | 2120 mm (83.46 in.) |
| Height | 2035 mm (80.12 in.) |
| Wheelbase | 4293 mm (169.02 in.) |
| Front track | 1745 mm (68.7 in.) |
| Rear (Back) track | 1729 mm (68.07 in.) |
| Ride height (ground clearance) | 218 mm (8.58 in.) |
| Minimum turning circle (turning diameter) | 16.3 m (53.48 ft.) |
| Approach angle | 23.2° |
| Departure angle | 24.7° |
| Ramp-over (brakeover) angle | 22.7° |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels permanently, and the front wheels are driven through an electrically or mechanically operated clutch if necessary. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission TorqueFlite |
| Front suspension | Coil spring, Rigid axle suspension, Transverse stabilizer |
| Rear suspension | Rigid axle suspension, Transverse stabilizer, Coil spring |
| Front brakes | Ventilated discs, 359.9×39.1 mm |
| Rear brakes | Ventilated discs, 357.9×34 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Cone worm with recirculation balls |
| Power steering | Hydraulic Steering |
| Tires size | 245/70 R17; 275/70 R18; 285/60 R20 |
| Wheel rims size | 7.5J x 17; 8J x 18; 8J x 20 |
INTRODUCTION
The Ram 2500/3500 series has long been a cornerstone of the American heavy-duty truck market, known for its robust construction and powerful engine options. The 2025 facelift of the DT generation continues this tradition, with the 6.7-liter Cummins HO diesel representing the pinnacle of performance within the 2500 range. This variant is designed for owners who frequently tow large trailers, haul heavy loads, or require a truck capable of demanding work applications. The Crew Cab Long configuration provides ample passenger space and a longer bed for increased cargo versatility. The combination of the Cummins HO engine and the TorqueFlite transmission aims to deliver a balance of power, efficiency, and refined operation.
Powertrain & Engine Architecture
At the heart of this Ram 2500 is the Cummins 6.7-liter inline-six diesel engine. The “HO” designation signifies a high-output version, utilizing a larger turbocharger and revised engine management calibration to produce 430 horsepower at 2800 rpm and a massive 1458 Nm (1075.37 lb.-ft.) of torque at 1800 rpm. The engine employs a diesel commonrail fuel injection system, delivering precise fuel metering for optimal combustion and reduced emissions. The overhead valve (OHV) valvetrain, while traditional, is known for its durability and reliability. The engine features a cast iron block and head, contributing to its longevity. The TorqueFlite 8-speed automatic transmission is specifically tuned to handle the high torque output of the Cummins engine. It features a robust internal design and optimized gear ratios for both towing and fuel efficiency. The transmission utilizes electronic controls for smooth and precise shifting.
Driving Characteristics
The 2500 6.7L Cummins HO Automatic delivers a driving experience that prioritizes capability and confidence. While not as nimble as lighter-duty trucks, the Ram offers a surprisingly comfortable ride, especially considering its heavy-duty nature. The 8-speed TorqueFlite transmission provides smooth and timely shifts, keeping the engine within its optimal power band. Acceleration is strong, particularly when unloaded, and the truck exhibits impressive pulling power when towing. The 4×4 system provides excellent traction in various conditions. Compared to the standard output Cummins engine, the HO version offers a noticeable increase in power and responsiveness. Compared to gasoline-powered Ram 2500s, the diesel offers significantly more low-end torque, making it ideal for towing and hauling. The manual transmission options, when available on other trims, offer more driver engagement but lack the ease of use and convenience of the TorqueFlite automatic.
Equipment & Trim Levels
The 2025 Ram 2500/3500 Crew Cab Long II 6.7L Cummins HO Automatic is typically offered in higher trim levels, such as Laramie, Longhorn, and Limited. Standard features generally include premium cloth or leather upholstery, a large touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, a premium sound system, and a comprehensive suite of safety features. Optional extras can include a panoramic sunroof, heated and ventilated seats, a rear-seat entertainment system, and advanced driver-assistance technologies like adaptive cruise control and lane-keeping assist. The interior design emphasizes comfort and functionality, with ample storage space and user-friendly controls.
Chassis & Braking
The Ram 2500 utilizes a heavy-duty chassis designed to withstand the stresses of demanding work applications. The front suspension features coil springs and a rigid axle with a transverse stabilizer bar, while the rear suspension employs a similar configuration. This setup provides a comfortable ride and excellent load-carrying capacity. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power even when heavily loaded. An Anti-lock Braking System (ABS) is standard. Steering is accomplished via a hydraulic power steering system, offering a responsive and precise feel.
Market Reception & Comparison
The Ram 2500/3500 with the 6.7L Cummins HO engine has consistently received positive reviews from automotive critics and truck enthusiasts. It is praised for its powerful engine, comfortable ride, and refined interior. Fuel economy, while not a primary concern for heavy-duty truck buyers, is generally competitive with other diesel-powered trucks in its class. Compared to the standard output Cummins engine, the HO version offers a significant performance upgrade, but at a slightly higher price point. Compared to Ford’s Super Duty and Chevrolet/GMC’s HD trucks, the Ram 2500 is often lauded for its superior ride quality and interior refinement.
Legacy
The 6.7-liter Cummins engine has established a strong reputation for reliability and longevity. With proper maintenance, these engines are known to exceed 300,000 miles of service life. The TorqueFlite transmission is also a durable unit, capable of handling the high torque output of the Cummins engine. On the used car market, Ram 2500/3500 models equipped with this powertrain combination hold their value well, reflecting their proven capability and durability. The 2025 facelifted model is expected to continue this legacy, offering a compelling combination of power, comfort, and technology for heavy-duty truck buyers.
