The RAM 2500/3500 Crew Cab Long II (DT) model, specifically the 3500 variant equipped with the 6.7-liter Cummins turbocharged diesel engine producing 400 horsepower and paired with a six-speed Aisin automatic transmission and a dual rear wheel (DRW) configuration, represents a significant offering in the American heavy-duty pickup truck market. Introduced for the 2019 model year and continuing through 2025, this configuration caters to buyers requiring substantial towing and payload capacity. It sits at the upper end of the RAM 2500/3500 lineup, positioned as a workhorse for commercial applications and demanding recreational users. This particular trim level is designed for those who prioritize capability over fuel efficiency, offering a robust and reliable powertrain for heavy-duty tasks.
Technical Specifications
| Brand | RAM |
| Model | 2500/3500 |
| Generation | 2500/3500 Crew Cab Long II (DT) |
| Type (Engine) | 3500 6.7 Cummins TD (400 Hp) 4×4 Automatic DRW |
| 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 | 9.5 kg/Hp, 105 Hp/tonne |
| Weight-to-torque ratio | 3.5 kg/Nm, 284.7 Nm/tonne |
| Power | 400 Hp @ 2800 rpm |
| Power per litre | 59.8 Hp/l |
| Torque | 1084 Nm @ 1800 rpm (799.52 lb.-ft. @ 1800 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 | 16.2:1 |
| 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 | 3808 kg (8395.2 lbs.) |
| Max. weight | 6350 kg (13999.35 lbs.) |
| Max load | 2542 kg (5604.15 lbs.) |
| Trunk (boot) space – maximum | 2115 l (74.69 cu. ft.) |
| Permitted trailer load with brakes (12%) | 14846 kg (32729.83 lbs.) |
| Length | 6626 mm (260.87 in.) |
| Width including mirrors | 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) | 312 mm (12.28 in.) |
| Minimum turning circle (turning diameter) | 16.4 m (53.81 ft.) |
| Approach angle | 23.3° |
| Departure angle | 23.5° |
| Ramp-over (brakeover) angle | 22.4° |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 6 gears, automatic transmission Aisin |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Leaf spring |
| Front brakes | Disc |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Tires size | 235/80 R17; 275/70 R18 E; 285/60 R20E |
| Wheel rims size | 6J x 17; 8.0J x 18; 8J x 20 |
Powertrain & Engine Architecture
The heart of this RAM 3500 is the 6.7-liter Cummins inline-six diesel engine. This engine, designated with various codes throughout its production run, is a well-established powerplant known for its durability and torque output. The 400 horsepower version, introduced in 2019, utilizes a variable geometry turbocharger and a high-pressure common rail fuel injection system to optimize performance and efficiency. The engine’s robust construction, featuring a cast iron block and head, contributes to its longevity. The Aisin six-speed automatic transmission is specifically designed to handle the high torque output of the Cummins engine. It features a heavy-duty torque converter and robust internal components. The transmission’s gear ratios are optimized for both towing and everyday driving, providing a balance between power delivery and fuel economy.
Driving Characteristics
The 400 hp/1084 Nm Cummins-powered RAM 3500 DRW delivers a commanding driving experience. While not designed for outright speed, the engine provides ample torque from low RPMs, making it exceptionally capable for towing heavy loads. The Aisin transmission shifts smoothly and decisively, contributing to a refined driving experience. Compared to lower-output Cummins variants, this 400 hp version offers noticeably improved acceleration and passing power, especially when hauling a load. The dual rear wheel configuration enhances stability when towing and increases the truck’s overall payload capacity. However, it also results in a wider track, which can make maneuvering in tight spaces more challenging. The ride quality, even unladen, is generally comfortable, thanks to the well-tuned suspension system.
Equipment & Trim Levels
The RAM 3500 DRW with the 400 hp Cummins engine was typically offered in higher trim levels, such as Laramie, Longhorn, and Limited. Standard features generally included a premium interior with leather upholstery, heated and ventilated front seats, a large touchscreen infotainment system with navigation, and a comprehensive suite of safety features. Optional extras included a sunroof, premium sound system, and various driver-assistance technologies. The Crew Cab configuration provides ample space for passengers, making it suitable for both work and family use.
Chassis & Braking
The RAM 3500 chassis is built around a heavy-duty frame designed to withstand the stresses of heavy towing and hauling. The front suspension utilizes an independent multi-link setup for improved ride quality and handling. The rear suspension employs a leaf spring design, optimized for load-carrying capacity. Braking duties are handled by heavy-duty disc brakes on all four wheels, providing ample stopping power even when fully loaded. An Anti-lock Braking System (ABS) is standard, enhancing safety and control. The DRW configuration contributes to increased stability and braking performance.
Market Reception & Comparison
The RAM 3500 with the 400 hp Cummins engine received positive reviews from automotive critics. It was praised for its powerful engine, smooth transmission, and comfortable ride. Compared to competitors like the Ford Super Duty and Chevrolet Silverado HD, the RAM 3500 was often lauded for its refined interior and advanced technology. Fuel economy, while not a primary concern for buyers in this segment, was generally considered competitive. Reliability has been a strong point for the Cummins engine, with many owners reporting hundreds of thousands of miles of trouble-free operation.
Legacy
The 6.7-liter Cummins engine has established a strong reputation for reliability and longevity. The 400 hp variant, paired with the Aisin automatic transmission, continues to be a popular choice in the used truck market. These trucks hold their value well due to their proven capability and durability. Regular maintenance, including oil changes and filter replacements, is crucial for ensuring the long-term health of the powertrain. The RAM 3500 DRW with the 400 hp Cummins engine remains a highly sought-after vehicle for those requiring a heavy-duty pickup truck capable of handling demanding tasks.
