The RAM 2500/3500 Crew 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 substantial towing capacity, robust performance, and relative comfort for owners needing a powerful work truck. This variant, often referred to as a “DRW” (Dual Rear Wheel) model, was positioned as a premium offering within the 2500/3500 lineup, catering to those requiring maximum payload and towing capabilities.
Technical Specifications
| Brand | RAM |
| Model | 2500/3500 |
| Generation | 2500/3500 Crew 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 | 5-6 |
| Doors | 4 |
| Fuel Type | Diesel |
| Weight-to-power ratio | 9 kg/Hp, 110.9 Hp/tonne |
| Weight-to-torque ratio | 2.9 kg/Nm, 343.4 Nm/tonne |
| Power | 350 Hp @ 3000 rpm |
| Power per litre | 52.3 Hp/l |
| Torque | 1084 Nm @ 1500 rpm (799.52 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 | 3157 kg (6959.99 lbs.) |
| Max. weight | 4581 kg (10099.38 lbs.) |
| Max load | 1424 kg (3139.38 lbs.) |
| Trunk (boot) space – maximum | 1628 l (57.49 cu. ft.) |
| Fuel tank capacity | 129 l (34.08 US gal | 28.38 UK gal) |
| Permitted trailer load with brakes (12%) | 6304 kg (13897.94 lbs.) |
| Length | 6030 mm (237.4 in.) |
| Width including mirrors | 2009 mm (79.09 in.) |
| Height | 1974 mm (77.72 in.) |
| Wheelbase | 3782 mm (148.9 in.) |
| Front track | 1735 mm (68.31 in.) |
| Rear (Back) track | 1732 mm (68.19 in.) |
| Minimum turning circle (turning diameter) | 13.3 m (43.64 ft.) |
| Approach angle | 21.8° |
| Departure angle | 27.0° |
| Ramp-over (brakeover) angle | 18.2° |
| 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 |
INTRODUCTION
The 2012 RAM 3500 Crew Cab I with the 6.7 HO Cummins and automatic transmission represented the first year of a significant redesign for the RAM heavy-duty lineup. Built on the 2500/3500 platform, this generation aimed to improve upon previous models with enhanced interior refinement, increased towing capacity, and a more modern driving experience. The “HO” designation for the Cummins engine signified a higher output version compared to the standard 6.7L, making it a popular choice for those needing serious pulling power. The DRW configuration, with its dual rear wheels, further enhanced stability and payload capacity, making it ideal for commercial applications and demanding recreational uses.
Powertrain & Engine Architecture
At the heart of this RAM 3500 lies the Cummins 6.7-liter inline-six diesel engine, specifically the ETJ variant. This engine is a robust and well-regarded powerplant known for its durability and torque output. The “HO” version utilizes a variable geometry turbocharger (VGT) and an intercooler to boost power to 350 horsepower at 3000 rpm and a massive 1084 Nm (799.52 lb-ft) of torque at 1500 rpm. The engine employs a diesel commonrail fuel injection system, delivering highly pressurized fuel directly into the cylinders for efficient combustion. The overhead valve (OHV) valvetrain, while traditional, contributes to the engine’s reliability and low-end torque characteristics. The six-speed automatic transmission, sourced from Aisin, was chosen for its ability to handle the engine’s substantial torque and provide smooth shifting. This transmission featured electronically controlled shifting and tow/haul mode for optimized performance when towing heavy loads.
Driving Characteristics
The 2012 RAM 3500 6.7 HO Cummins with the automatic transmission delivers a driving experience focused on capability rather than outright speed. While 350 horsepower is adequate, the engine’s strength lies in its immense torque. This allows for effortless towing and hauling, even with substantial loads. The automatic transmission provides smooth and predictable shifts, although it may not be as responsive as a manual transmission. The gear ratios are optimized for towing, with lower gears providing ample pulling power and higher gears offering reasonable fuel economy when cruising. Compared to the standard Cummins engine, the HO version offers noticeably more power, especially when accelerating with a load. Compared to gasoline-powered RAM 2500/3500 models, the diesel offers significantly more torque and better fuel economy when towing, but at the cost of higher initial purchase price and potentially higher maintenance costs.
Equipment & Trim Levels
The Crew Cab configuration provided spacious seating for up to six passengers, making it a comfortable option for families or work crews. Standard features typically included air conditioning, power windows and locks, a basic audio system, and vinyl upholstery. Higher trim levels, such as Laramie or Longhorn, added features like leather upholstery, heated and ventilated seats, a premium audio system, navigation, and a rearview camera. Optional extras included a sunroof, upgraded wheels, and various towing packages. The DRW configuration inherently came with a higher level of equipment due to its positioning as a premium work truck.
Chassis & Braking
The RAM 3500 chassis is built for heavy-duty 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 to support heavy loads. The DRW configuration provides increased stability and payload capacity. Braking duties are handled by disc brakes on all four wheels, assisted by an Anti-lock Braking System (ABS). The large brakes are necessary to safely stop the heavy vehicle and any attached trailer. Tire sizes varied depending on the trim level and options selected, with common sizes including 245/70 R17, 265/70 R17, and 275/70 R18.
Market Reception & Comparison
The 2012 RAM 3500 with the 6.7 HO 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. The DRW configuration was particularly appreciated by those needing maximum towing and payload capacity. Fuel economy, while better than comparable gasoline-powered trucks, was still relatively low. Reliability was generally good, although diesel engines can be more expensive to maintain than gasoline engines. Compared to competitors like the Ford Super Duty and Chevrolet Silverado/GMC Sierra, the RAM 3500 offered a compelling combination of power, comfort, and capability.
Legacy
The 6.7 HO Cummins engine and the six-speed Aisin automatic transmission have proven to be a durable and reliable combination. These trucks continue to be popular on the used car market, commanding relatively high prices due to their reputation for longevity and capability. While newer RAM 3500 models offer even more power and features, the 2012 model remains a capable and dependable work truck. Regular maintenance, including oil changes and fuel filter replacements, is crucial to ensuring the long-term reliability of this powertrain. The DRW configuration, in particular, is sought after by those needing a heavy-duty truck for demanding applications.
