The RAM 2500/3500 Crew Cab Long II (DT, facelift 2025) represents the latest iteration of Ram’s heavy-duty pickup truck line, introduced for the 2025 model year. This particular variant features the 6.7-liter Cummins HO (High Output) diesel engine paired with the TorqueFlite automatic transmission, and is designated as a Single Rear Wheel (SRW) configuration. Positioned as a high-capability work truck and towing machine, this combination caters to buyers needing substantial power and torque for demanding tasks. The DT generation, initially launched in 2019, received a significant facelift for 2025, incorporating updated styling, technology, and interior refinements. This version primarily targets the North American market, where heavy-duty trucks are highly popular for both commercial and personal use.
Technical Specifications
| Brand | RAM |
| Model | 2500/3500 |
| Generation | 2500/3500 Crew Cab Long II (DT, facelift 2025) |
| Type (Engine) | 3500 6.7 Cummins HO (430 Hp) TorqueFlite SRW |
| 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 kg/Hp, 124.7 Hp/tonne |
| Weight-to-torque ratio | 2.4 kg/Nm, 422.7 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 | 3449 kg (7603.74 lbs.) |
| Max. weight | 5443 kg (11999.76 lbs.) |
| Max load | 1994 kg (4396.02 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%) | 11562 kg (25489.85 lbs.) |
| Length | 6626 mm (260.87 in.) |
| Width | 2120 mm (83.46 in.) |
| Height | 1990 mm (78.35 in.) |
| Wheelbase | 4294 mm (169.06 in.) |
| Front track | 1719 mm (67.68 in.) |
| Rear (Back) track | 1703 mm (67.05 in.) |
| Ride height (ground clearance) | 186 mm (7.32 in.) |
| Minimum turning circle (turning diameter) | 16.3 m (53.48 ft.) |
| Approach angle | 18.3° |
| Departure angle | 24.2° |
| Ramp-over (brakeover) angle | 19.5° |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| 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, Leaf spring, Air Suspension – Optional |
| 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 | 275/70 R18; 285/60 R20 |
| Wheel rims size | 8J x 18; 8J x 20 |
Powertrain & Engine Architecture
The heart of this RAM 2500/3500 variant is the Cummins 6.7-liter inline-six diesel engine. This engine, specifically the “High Output” (HO) version, is a well-established powerplant known for its durability and substantial torque output. The engine utilizes a cast iron block and head, contributing to its robust construction. The 6.7L Cummins employs a diesel commonrail fuel injection system, delivering highly pressurized fuel directly into the cylinders for efficient combustion. The engine is turbocharged and intercooled, maximizing power and minimizing emissions. The valvetrain utilizes an overhead valve (OHV) configuration. The TorqueFlite 8-speed automatic transmission is specifically tuned to handle the engine’s immense torque, providing smooth and efficient gear changes. This transmission features electronic control and multiple shift modes, including Tow/Haul, for optimized performance when towing heavy loads.
Driving Characteristics
The 430 horsepower and 1458 lb-ft of torque delivered by this powertrain configuration results in impressive performance. While not designed for outright speed, the truck offers strong acceleration, even when heavily loaded. The TorqueFlite transmission’s gear ratios are optimized for towing and hauling, providing ample low-end torque. Compared to lower-output engine options, this variant delivers significantly more power and towing capacity. Compared to the standard output Cummins, the HO version provides a noticeable increase in horsepower and torque, particularly at higher RPMs. The automatic transmission, while convenient, may not offer the same level of control as a manual transmission, but it simplifies operation for drivers who prioritize ease of use.
Equipment & Trim Levels
The 2500/3500 Crew Cab Long II (DT, facelift 2025) with the 6.7L Cummins HO and TorqueFlite transmission is typically offered in higher trim levels, such as Laramie, Limited Longhorn, and Limited. Standard features generally include a premium interior with leather upholstery, heated and ventilated front seats, a large touchscreen infotainment system with navigation, and advanced safety features like adaptive cruise control and lane departure warning. Optional extras can include a sunroof, premium sound system, and various off-road packages. The Crew Cab configuration provides ample space for passengers, while the Long bed offers a generous cargo capacity.
Chassis & Braking
The RAM 2500/3500 utilizes a heavy-duty chassis designed to withstand the stresses of towing and hauling. The front suspension features coil springs and a rigid axle with a transverse stabilizer bar. The rear suspension employs leaf springs, with an optional air suspension system available for improved ride comfort and load leveling. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power. An Anti-lock Braking System (ABS) is standard. Steering is hydraulic, providing a robust and reliable feel.
Market Reception & Comparison
The 6.7L Cummins HO-equipped RAM 2500/3500 has consistently received positive reviews for its powerful engine, comfortable ride, and impressive towing capacity. Critics often praise the Cummins engine’s durability and reliability. Compared to gasoline-powered alternatives, this diesel variant offers superior fuel economy when towing heavy loads. However, the diesel engine typically carries a higher initial cost and may require more expensive maintenance. Compared to other heavy-duty trucks, such as the Ford Super Duty and Chevrolet Silverado/GMC Sierra, the RAM 2500/3500 is often lauded for its refined interior and comfortable ride quality.
Legacy
The Cummins 6.7-liter engine has become a benchmark for diesel performance and reliability in the heavy-duty truck segment. This powertrain, in various iterations, has powered Ram trucks for over a decade, earning a reputation for longevity and durability. The TorqueFlite automatic transmission has also proven to be a reliable and capable partner for the Cummins engine. In the used car market, these trucks hold their value well, particularly those that have been well-maintained. The combination of power, capability, and comfort makes the RAM 2500/3500 with the 6.7L Cummins HO a popular choice for buyers seeking a robust and dependable heavy-duty pickup truck.
