The RAM 2500/3500 Regular Cab I, specifically the 2500 model equipped with the 6.7-liter Cummins turbodiesel engine producing 350 horsepower and paired with a six-speed automatic transmission and a 4×4 drivetrain, represents a significant offering in the heavy-duty pickup truck segment. Produced from 2010 through 2012, this configuration occupied a crucial position within the broader RAM lineup, catering to buyers needing substantial towing and hauling capabilities without necessarily opting for the highest trim levels or power outputs. It was part of the third generation of the RAM heavy-duty series, known for its robust construction and focus on work-truck functionality.
Technical Specifications
| Brand | RAM |
| Model | 2500/3500 |
| Generation | 2500/3500 Regular Cab I |
| Type (Engine) | 2500 6.7 Cummins TD (350 Hp) 4×4 Automatic |
| Start of production | 2010 |
| End of production | 2012 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 2-3 |
| Doors | 2 |
| Fuel Type | Diesel |
| Weight-to-power ratio | 10.2 kg/Hp, 97.9 Hp/tonne |
| Weight-to-torque ratio | 4.1 kg/Nm, 246.5 Nm/tonne |
| Power | 350 Hp @ 3000 rpm |
| Power per litre | 52.3 Hp/l |
| Torque | 881 Nm @ 1500 rpm, 649.79 lb.-ft. @ 1500 rpm |
| Engine Model/Code | ETJ |
| 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. |
| Number of valves per cylinder | 2 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 11.4 l, 12.05 US qt | 10.03 UK qt |
| Coolant | 21.4 l, 22.61 US qt | 18.83 UK qt |
| Kerb Weight | 3574 kg, 7879.32 lbs |
| Max. weight | 4581 kg, 10099.38 lbs |
| Max load | 1007 kg, 2220.05 lbs |
| Trunk (boot) space – maximum | 2115 l, 74.69 cu. ft |
| Fuel tank capacity | 132 l, 34.87 US gal | 29.04 UK gal |
| Permitted trailer load with brakes (12%) | 4740 kg, 10449.91 lbs |
| Length | 5867 mm, 230.98 in |
| Width including mirrors | 2004 mm, 78.9 in |
| Height | 1923 mm, 75.71 in |
| Wheelbase | 3556 mm, 140 in |
| Front track | 1735 mm, 68.31 in |
| Rear (Back) track | 1925 mm, 75.79 in |
| Minimum turning circle (turning diameter) | 12.6 m, 41.34 ft |
| Approach angle | 18.1° |
| Departure angle | 27.6° |
| Ramp-over (brakeover) angle | 16.9° |
| 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 | Leaf spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 245/70 R17; 265/70 R17; 275/70 R18 |
| Wheel rims size | 7.5J x 17; 8J x 17; 8J x 18 |
INTRODUCTION
The RAM 2500/3500 Regular Cab I with the 6.7L Cummins diesel and automatic transmission, produced between 2010 and 2012, was a workhorse designed for demanding tasks. This generation represented a significant step forward for RAM trucks, offering increased capability and refinement compared to its predecessors. The “Regular Cab I” designation refers to the body style – a two-door configuration – and the initial iteration of this generation. This particular variant aimed to provide a balance between capability and affordability, making it a popular choice for commercial users, farmers, and individuals needing a robust truck for towing and hauling. It sat below the higher trim levels (like Laramie or Longhorn) and the more powerful Cummins variants, offering a more accessible entry point into the heavy-duty RAM lineup.
Powertrain & Engine Architecture
At the heart of this RAM 2500/3500 is the 6.7-liter Cummins inline-six turbodiesel engine, identified by the ETJ engine code. This engine is a robust and well-regarded powerplant known for its durability and torque output. The 6.7L Cummins utilizes a common rail direct fuel injection system, delivering fuel at extremely high pressures for optimized combustion and efficiency. The engine features a variable geometry turbocharger (VGT) and an intercooler to enhance power and reduce emissions. The 350 horsepower output is achieved at 3000 rpm, while the impressive 881 Nm (649.79 lb-ft) of torque is available at a low 1500 rpm, making it ideal for towing and hauling heavy loads. The six-speed automatic transmission, a crucial component of this configuration, was designed to handle the engine’s substantial torque. It features electronically controlled shifting and a tow/haul mode to optimize performance when towing. The transmission’s gear ratios were carefully selected to provide a balance between acceleration, fuel economy, and towing capability.
Driving Characteristics
The 2500/3500 6.7L Cummins Automatic delivers a driving experience focused on capability rather than outright speed. While 350 horsepower is adequate, the real strength lies in the engine’s massive torque. Acceleration is brisk, especially when the transmission is in tow/haul mode, but it’s not a particularly sporty vehicle. The automatic transmission shifts smoothly and efficiently, providing seamless power delivery. Compared to manual transmission versions of the same engine, the automatic offers greater convenience, particularly in stop-and-go traffic. However, some drivers may prefer the more direct control offered by a manual gearbox. Compared to higher-output Cummins variants (like those producing 385 or 400 horsepower), this 350 hp version feels less powerful, especially when unladen. However, the difference in real-world towing scenarios is often minimal, and the lower horsepower engine can offer slightly better fuel economy.
Equipment & Trim Levels
The 2500/3500 Regular Cab I 6.7L Cummins Automatic typically came standard with a relatively basic level of equipment, reflecting its positioning as a work-oriented truck. Standard features generally included air conditioning, a basic audio system, vinyl upholstery, and manual windows and locks. However, options were available to enhance comfort and convenience. These included power windows and locks, upgraded audio systems, cruise control, and a limited-slip differential. Interior trim levels were typically functional and durable, prioritizing practicality over luxury. The dashboard layout was straightforward and easy to use, with large, clearly marked controls. The Regular Cab configuration offered seating for two or three passengers, depending on the configuration.
Chassis & Braking
The RAM 2500/3500 chassis is built around a robust frame designed to withstand heavy loads and demanding conditions. The front suspension utilizes an independent multi-link setup, providing a comfortable ride and good handling. The rear suspension employs a traditional leaf spring design, which is well-suited for hauling and towing. Braking duties are handled by ventilated discs at the front and discs at the rear, providing ample stopping power. An Anti-lock Braking System (ABS) is standard, enhancing safety and control. The 4×4 drivetrain provides excellent traction in a variety of conditions, making it suitable for both on-road and off-road use. Tire sizes varied depending on the specific configuration, with options ranging from 245/70 R17 to 275/70 R18.
Market Reception & Comparison
The RAM 2500/3500 6.7L Cummins Automatic was generally well-received by critics and buyers alike. It was praised for its powerful engine, robust construction, and impressive towing and hauling capabilities. Fuel economy, while not exceptional, was considered reasonable for a heavy-duty truck. Compared to its competitors – primarily the Ford Super Duty and Chevrolet/GMC HD trucks – the RAM offered a competitive combination of features, performance, and price. The 350 hp Cummins variant often represented a sweet spot in the lineup, offering sufficient power for most tasks without the higher cost of the more powerful engines. Reliability was generally good, although some owners reported issues with the turbocharger and fuel injection system.
Legacy
The 6.7-liter Cummins engine has become legendary for its durability and longevity. Even today, well-maintained examples of the 2010-2012 RAM 2500/3500 with this powertrain command respectable prices in the used car market. The engine’s robust construction and relatively simple design contribute to its long-term reliability. While modern heavy-duty trucks offer more advanced features and technologies, the 2010-2012 RAM 2500/3500 remains a capable and dependable workhorse, appreciated by those who value simplicity, durability, and raw towing power. The combination of the Cummins engine and the six-speed automatic transmission proved to be a successful one, setting the stage for future generations of RAM heavy-duty trucks.


