The RAM 2500/3500 Regular Cab I, specifically the 3500 model equipped with the 6.7 HO Cummins turbocharged diesel engine producing 350 horsepower and paired with a six-speed automatic transmission and four-wheel drive (4×4), represents a significant offering in the heavy-duty pickup truck segment. Introduced for the 2012 model year, this configuration aimed to provide a balance of robust towing capacity, diesel efficiency, and relative ease of use through the automatic transmission. This variant occupied a strong position within the RAM lineup, serving as a workhorse for those needing substantial payload and towing capabilities without the demands of a manual transmission.
Technical Specifications
| Brand | RAM |
| Model | 2500/3500 |
| Generation | 2500/3500 Regular Cab I |
| Type (Engine) | 3500 6.7 HO Cummins TD (350 Hp) 4×4 Automatic DRW |
| Start of production | 2012 |
| 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 | 9.2 kg/Hp, 109.1 Hp/tonne |
| Weight-to-torque ratio | 3.6 kg/Nm, 274.7 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) |
| Maximum engine speed | 3500 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.) |
| Compression ratio | 17.3:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | OHV |
| 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 | 3207 kg (7070.22 lbs.) |
| Max. weight | 5534 kg (12200.38 lbs.) |
| Max load | 2327 kg (5130.16 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%) | 7847 kg (17299.67 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 | Disc |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Tires size | 245/70 R17; 265/70 R17; 275/70 R18 |
| Wheel rims size | 7.5J x 17; 8J x 17; 8J x 18 |
Powertrain & Engine Architecture
At the heart of this RAM 3500 lies the 6.7-liter Cummins HO (High Output) inline-six cylinder diesel engine, designated with the ETJ code. This engine is a robust and well-regarded powerplant known for its durability and torque production. The engine utilizes a diesel commonrail fuel injection system, delivering highly pressurized fuel directly into the cylinders for efficient combustion. The turbocharger and intercooler work in tandem to increase air density, boosting power output. The engine features an overhead valve (OHV) valvetrain, a design choice prioritizing simplicity and reliability. The six-speed automatic transmission, a crucial component of this variant, was designed to handle the engine’s substantial torque output. It features electronically controlled shifting and tow/haul modes optimized for heavy loads.
Driving Characteristics
The 3500 with the 6.7L Cummins and automatic transmission delivers a driving experience focused on capability rather than outright speed. While 350 horsepower is respectable, the engine’s 881 lb-ft of torque is the defining characteristic. This translates to effortless towing and hauling, even with substantial loads. The automatic transmission provides smooth shifts, making it easier to manage in traffic or on challenging terrain compared to a manual transmission. However, the automatic does slightly diminish the engine’s peak efficiency compared to a manual counterpart. The gear ratios are optimized for towing, with lower gears providing ample pulling power, while higher gears allow for relatively quiet highway cruising. Compared to the standard output Cummins, the HO version provides a noticeable increase in power, and compared to gasoline-powered RAM 2500/3500 models, the diesel offers superior torque and fuel economy when towing.
Equipment & Trim Levels
The 2012 RAM 2500/3500 Regular Cab I 3500 6.7 HO Cummins TD (350 Hp) 4×4 Automatic DRW typically came standard with features geared towards work and utility. These included air conditioning, a basic audio system, vinyl upholstery, and a heavy-duty suspension. Optional extras included upgraded audio systems, power windows and locks, cruise control, and various towing packages. The “DRW” designation (Dual Rear Wheels) indicates a configuration with two wheels on each rear axle, further enhancing stability and load-carrying capacity. Interior trim levels varied, with higher trims offering cloth or leather upholstery, upgraded interior finishes, and additional convenience features.
Chassis & Braking
The chassis of the RAM 3500 is built around a robust frame designed to withstand heavy loads and demanding use. The front suspension utilizes an independent multi-link setup for improved ride quality and handling, while the rear suspension employs a traditional leaf spring design, optimized for load-carrying capacity. Braking duties are handled by disc brakes on all four wheels, providing ample stopping power. An Anti-lock Braking System (ABS) is standard, enhancing safety during emergency braking situations. The heavy-duty suspension and braking system are specifically tuned to accommodate the increased weight and demands of the Cummins diesel engine and the DRW configuration.
Market Reception & Comparison
The 2012 RAM 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, impressive towing capacity, and comfortable ride quality. Fuel economy, while not exceptional, was considered competitive for a heavy-duty diesel pickup. Compared to other trims in the RAM lineup, such as those equipped with the 5.7L Hemi V8, the Cummins diesel offered significantly more torque and towing capability, albeit at a higher price point. Compared to competitors like the Ford Super Duty and Chevrolet Silverado/GMC Sierra, the RAM 3500 was often lauded for its refined interior and comfortable ride.
Legacy
The 6.7L Cummins engine, in general, has proven to be exceptionally reliable, and the 2012 model year is no exception. Properly maintained, these engines can easily exceed 200,000 or even 300,000 miles. The automatic transmission, while generally durable, requires regular fluid changes to ensure longevity. In the used car market, these trucks hold their value relatively well, particularly those in good condition with documented maintenance records. They remain a popular choice for those needing a capable and reliable heavy-duty pickup for work or recreational purposes. The combination of a powerful diesel engine, robust chassis, and user-friendly automatic transmission continues to make this variant a desirable option for buyers seeking a workhorse truck.
