The RAM 2500/3500 Crew Cab Long II (DT facelift, introduced in 2025) represents the latest iteration of Ram’s heavy-duty pickup truck lineage. Specifically, the 3500 model equipped with the 6.7-liter Cummins High Output (HO) diesel engine producing 430 horsepower and paired with the TorqueFlite 8-speed automatic transmission and a dual rear wheel (DRW) configuration, is positioned as a premium workhorse designed for demanding towing and hauling applications. This variant builds upon the established DT platform, first introduced in 2019, with updates focused on interior refinement, technology integration, and enhanced capability. Production began in the 2025 model year, continuing Ram’s tradition of offering robust and versatile trucks for the North American market.
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) 4×4 TorqueFlite DRW |
| 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 | 8.9 kg/Hp, 111.9 Hp/tonne |
| Weight-to-torque ratio | 2.6 kg/Nm, 379.5 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 | 3842 kg (8470.16 lbs.) |
| Max. weight | 6350 kg (13999.35 lbs.) |
| Max load | 2508 kg (5529.19 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%) | 15372 kg (33889.46 lbs.) |
| Length | 6626 mm (260.87 in.) |
| Width | 2450 mm (96.46 in.) |
| Height | 2015 mm (79.33 in.) |
| Wheelbase | 4300 mm (169.29 in.) |
| Front track | 1769 mm (69.65 in.) |
| Rear (Back) track | 1927 mm (75.87 in.) |
| Ride height (ground clearance) | 214 mm (8.43 in.) |
| Minimum turning circle (turning diameter) | 16.4 m (53.81 ft.) |
| Approach angle | 20.6° |
| Departure angle | 24.2° |
| Ramp-over (brakeover) angle | 21.3° |
| Drivetrain Architecture | All wheel drive (4×4). ICE drives rear wheels, front wheels engaged via clutch. |
| Number of gears and type of gearbox | 8 gears, automatic transmission TorqueFlite |
| Front suspension | Coil spring, Rigid axle, Transverse stabilizer |
| Rear suspension | Rigid axle, 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 | 235/80 R17 |
| Wheel rims size | 6J x 17 |
INTRODUCTION
The 2025 RAM 3500 Crew Cab Long II, specifically with the 6.7L Cummins HO diesel and TorqueFlite transmission, represents the pinnacle of capability within the Ram heavy-duty lineup. This configuration is geared towards customers requiring substantial towing capacity and payload, such as those in agriculture, construction, or those frequently hauling large trailers. The “DT” designation refers to the truck’s generation, which received a significant facelift for the 2025 model year, including interior upgrades and revised exterior styling. The Crew Cab Long configuration provides ample passenger space and a longer bed for increased cargo versatility. The DRW (Dual Rear Wheel) setup further enhances stability and load-carrying capacity, making it ideal for the most demanding tasks.
Powertrain & Engine Architecture
At the heart of this variant lies the Cummins 6.7-liter inline-six diesel engine. This engine, designated as the “High Output” (HO) version, produces 430 horsepower at 2800 rpm and a massive 1458 Nm (1075.37 lb.-ft.) of torque at 1800 rpm. The engine utilizes a common-rail direct fuel injection system, delivering precise fuel metering for optimal combustion and efficiency. The engine features an overhead valve (OHV) valvetrain, known for its durability and simplicity. A turbocharger and intercooler work in tandem to increase air intake, boosting power and torque output. The engine’s robust construction, with a 16.2:1 compression ratio, contributes to its longevity and reliability. Paired with the engine is the TorqueFlite 8-speed automatic transmission, a heavy-duty unit designed to handle the engine’s substantial torque. This transmission features electronically controlled shifts and a wide gear ratio spread for optimal performance and fuel economy.
Driving Characteristics
The 3500 with the Cummins HO and TorqueFlite delivers a driving experience focused on power and capability rather than outright speed. Acceleration is brisk, particularly when considering the truck’s substantial weight. The TorqueFlite transmission provides smooth and responsive shifts, effectively managing the engine’s power band. The 8-speed configuration allows for a lower gear ratio for improved towing performance and a higher gear ratio for relaxed highway cruising. Compared to lower-output Cummins variants or gasoline-powered Ram 2500/3500 models, this configuration offers significantly more torque, making it ideal for hauling heavy loads or navigating steep grades. While the DRW configuration enhances stability, it also results in a wider turning radius compared to single rear wheel (SRW) models. The suspension, while tuned for load-carrying, provides a reasonably comfortable ride, especially with the optional air suspension system.
Equipment & Trim Levels
The 3500 Crew Cab Long II with the Cummins HO typically comes standard with a comprehensive suite of features. Interior appointments include cloth upholstery, though leather options are readily available. Standard features often include an 8.4-inch touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, a rearview camera, and keyless entry. Higher trim levels, such as Limited Longhorn or Limited, add premium features like leather upholstery, heated and ventilated seats, a larger touchscreen display, a premium sound system, and advanced safety technologies. Optional extras include a sunroof, a bed liner, and various towing packages.
Chassis & Braking
The Ram 3500 chassis is built around a heavy-duty frame designed to withstand significant loads. The front suspension utilizes a coil spring and rigid axle configuration with a transverse stabilizer bar. The rear suspension employs a leaf spring setup, with an optional air suspension system available for improved ride quality and load leveling. Braking duties are handled by ventilated disc brakes on all four wheels, measuring 359.9×39.1 mm at the front and 357.9×34 mm at the rear. An Anti-lock Braking System (ABS) is standard. The DRW configuration provides increased braking capacity and stability compared to SRW models.
Market Reception & Comparison
The RAM 3500 with the Cummins HO engine has consistently received positive reviews for its exceptional towing capacity, robust powertrain, and comfortable interior. Critics have praised the Cummins engine for its durability and reliability. Compared to the standard Cummins engine, the HO version offers a significant power boost, making it the preferred choice for those requiring maximum capability. Compared to competitors like the Ford Super Duty and Chevrolet Silverado/GMC Sierra 3500, the Ram 3500 is often lauded for its refined ride quality and user-friendly infotainment system. Fuel economy, while not a primary concern for heavy-duty truck buyers, is comparable to other diesel-powered competitors.
Legacy
The Cummins 6.7-liter engine has established a strong reputation for longevity and reliability, and this powertrain combination is expected to hold its value well in the used car market. The TorqueFlite transmission, while a more recent addition, has also proven to be a durable and capable unit. The 2025 RAM 3500 Crew Cab Long II with the Cummins HO engine represents a continuation of Ram’s commitment to building capable and reliable heavy-duty trucks, solidifying its position as a leader in the segment. Proper maintenance, including regular oil changes and fuel filter replacements, will be crucial to ensuring the long-term health of this powertrain.
