The RAM 2500/3500 Crew Cab Long II (DT) with the 6.7-liter Cummins Turbo Diesel engine producing 370 horsepower and paired with a six-speed automatic transmission represents a significant offering in the heavy-duty pickup truck segment. Introduced for the 2019 model year and continuing through 2025, this configuration aimed to balance substantial towing and hauling capability with a degree of everyday usability. Positioned as a mid-to-upper trim level within the broader 2500/3500 lineup, it catered to buyers needing serious truck performance without necessarily opting for the highest-tier luxury features. This variant was primarily sold in the North American market, where demand for heavy-duty trucks remains consistently strong.
Technical Specifications
| Brand | RAM |
| Model | 2500/3500 |
| Generation | 2500/3500 Crew Cab Long II (DT) |
| Type (Engine) | 2500 6.7 Cummins TD (370 Hp) 4×4 Automatic |
| Start of production | 2019 |
| End of production | 2025 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 5-6 |
| Doors | 4 |
| Fuel Type | Diesel |
| Weight-to-power ratio | 9.4 kg/Hp, 106.5 Hp/tonne |
| Weight-to-torque ratio | 3.2 kg/Nm, 311.9 Nm/tonne |
| Power | 370 Hp @ 2800 rpm |
| Power per litre | 55.3 Hp/l |
| Torque | 1084 Nm @ 1700 rpm (799.52 lb.-ft. @ 1700 rpm) |
| Maximum engine speed | 3200 rpm |
| Engine layout | Front, Longitudinal |
| 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 | 19:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 11.4 l (12.05 US qt | 10.03 UK qt) |
| Coolant | 20.8 l (21.98 US qt | 18.3 UK qt) |
| Kerb Weight | 3475 kg (7661.06 lbs.) |
| Max. weight | 4536 kg (10000.17 lbs.) |
| Max load | 1061 kg (2339.1 lbs.) |
| Trunk (boot) space – maximum | 2115 l (74.69 cu. ft.) |
| Permitted trailer load with brakes (12%) | 7888 kg (17390.06 lbs.) |
| Length | 6626 mm (260.87 in.) |
| Width including mirrors | 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) | 334 mm (13.15 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° |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 6 gears, automatic transmission |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Disc |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Tires size | 275/70 R18 E; 285/60 R20E |
| Wheel rims size | 8.0J x 18; 8J x 20 |
Powertrain & Engine Architecture
The heart of this RAM variant is the 6.7-liter Cummins inline-six diesel engine. This engine, designated with various codes depending on specific calibration and emissions equipment, is a well-established powerplant known for its durability and torque output. The 370 horsepower version utilizes a turbocharger with an intercooler to increase air density and improve combustion efficiency. The engine employs a diesel common rail fuel injection system, delivering highly pressurized fuel directly into the cylinders for optimized combustion. The valvetrain features four valves per cylinder, enhancing breathing and contributing to the engine’s power characteristics. Paired with this engine is a six-speed automatic transmission, specifically designed to handle the substantial torque produced by the Cummins diesel. This transmission features electronically controlled shifting and is designed for both towing and everyday driving.
Driving Characteristics
The 6.7L Cummins with the automatic transmission delivers a driving experience focused on capability rather than outright speed. While 370 horsepower is respectable, the true strength lies in the engine’s 1084 Nm (799.52 lb-ft) of torque. This translates to effortless towing and hauling, even with heavy loads. The automatic transmission is tuned for smooth shifts and provides adequate responsiveness for most driving situations. Compared to manual transmission versions of the same engine, the automatic offers greater convenience, particularly in stop-and-go traffic. However, some drivers may find the automatic slightly less engaging and potentially less efficient in certain scenarios. The gear ratios are optimized for towing, meaning lower gears are readily available for climbing hills or accelerating with a load, while higher gears provide comfortable cruising on the highway.
Equipment & Trim Levels
The 2500/3500 Crew Cab Long II (DT) 6.7L Cummins Automatic typically came standard with a robust set of features. Interior appointments included cloth upholstery, though leather options were readily available. Standard features often included an infotainment system with a touchscreen display, Bluetooth connectivity, and a rearview camera. Higher trim levels added features like heated and ventilated seats, premium audio systems, and advanced safety technologies. Optional extras included a sunroof, navigation system, and various appearance packages. The Crew Cab configuration provides ample space for passengers, making it suitable for both work and family use. 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 suspension system features independent multi-link suspension at both the front and rear, providing a relatively comfortable ride considering the truck’s weight and intended purpose. Braking duties are handled by disc brakes on all four wheels, providing ample stopping power. An Anti-lock Braking System (ABS) is standard. Due to the weight of the vehicle and its intended use, the rear brakes are typically larger than those found on lighter-duty trucks. Stabilizer bars are incorporated into the suspension to reduce body roll during cornering.
Market Reception & Comparison
The RAM 2500/3500 with the 6.7L Cummins and automatic transmission was generally well-received by critics and consumers alike. It was praised for its powerful engine, comfortable ride, and spacious interior. Fuel economy, as expected for a heavy-duty diesel truck, was not a strong point, but it was considered acceptable given the vehicle’s capabilities. Compared to the gasoline-powered versions of the RAM 2500/3500, the Cummins diesel offered significantly more torque and towing capacity, albeit at a higher initial cost. Compared to competitors like the Ford Super Duty and Chevrolet Silverado/GMC Sierra, the RAM 2500/3500 was often lauded for its refined interior and comfortable ride quality.
Legacy
The 6.7L Cummins engine has earned a reputation for exceptional durability and longevity. Properly maintained, these engines can reliably exceed 240,000 kilometers (150,000 miles) with relative ease. The combination of the Cummins engine and the six-speed automatic transmission has proven to be a robust and dependable powertrain. In the used car market, these trucks hold their value relatively well, particularly those that have been well-maintained and have not been subjected to excessive abuse. The 2019-2025 RAM 2500/3500 Crew Cab Long II (DT) 6.7L Cummins Automatic remains a popular choice for buyers seeking a capable and reliable heavy-duty pickup truck.
