The RAM 2500/3500 Mega Cab I, specifically the facelifted version produced from 2013 to 2018, represented a significant evolution in the heavy-duty truck segment. This iteration, particularly the 2500 model equipped with the 6.7-liter Cummins turbocharged diesel engine producing 350 horsepower and paired with a six-speed manual transmission, solidified RAM’s reputation for robust capability and a comfortable ride. Positioned as a workhorse for demanding tasks like towing and hauling, this variant occupied a sweet spot in the lineup, offering a balance between power, efficiency, and usability for both commercial and personal applications. The Mega Cab configuration, offering significantly more rear passenger space than standard crew cabs, further enhanced its appeal to families and those needing to transport multiple passengers alongside work equipment.
Technical Specifications
| Brand | RAM |
| Model | 2500/3500 |
| Generation | 2500/3500 Mega Cab I (facelift 2013) |
| Type (Engine) | 2500 6.7 Cummins TD (350 Hp) 4×4 |
| Start of production | 2013 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 5-6 |
| Doors | 4 |
| Fuel Type | Diesel |
| Weight-to-power ratio | 10.5 kg/Hp, 95.2 Hp/tonne |
| Weight-to-torque ratio | 4.2 kg/Nm, 239.5 Nm/tonne |
| Power | 350 Hp @ 2800 rpm |
| Power per litre | 52.3 Hp/l |
| Torque | 881 Nm @ 1400 rpm (649.79 lb.-ft. @ 1400 rpm) |
| Maximum engine speed | 3200 rpm |
| Engine layout | Front, Longitudinal |
| 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 | 16.2:1 |
| Number of valves per cylinder | 2 |
| 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 capacity | 21.4 l (22.61 US qt | 18.83 UK qt) |
| Kerb Weight | 3678 kg (8108.6 lbs.) |
| Max. weight | 4536 kg (10000.17 lbs.) |
| Max load | 858 kg (1891.57 lbs.) |
| Trunk (boot) space – maximum | 1628 l (57.49 cu. ft.) |
| Fuel tank capacity | 117 l (30.91 US gal | 25.74 UK gal) |
| Permitted trailer load with brakes (12%) | 7130 kg (15718.96 lbs.) |
| Length | 6309 mm (248.39 in.) |
| Width including mirrors | 2009 mm (79.09 in.) |
| Height | 1989 mm (78.31 in.) |
| Wheelbase | 4064 mm (160 in.) |
| Front track | 1735 mm (68.31 in.) |
| Rear (Back) track | 1732 mm (68.19 in.) |
| Minimum turning circle | 14.2 m (46.59 ft.) |
| Approach angle | 23.9° |
| Departure angle | 23.0° |
| Ramp-over angle | 18.3° |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 6 gears, manual 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 118T; 285/60 R20 115T |
| Wheel rims size | 8J x 18 ET43; 8J x 20 ET55 |
Powertrain & Engine Architecture
The heart of this RAM 2500/3500 variant is the 6.7-liter Cummins inline-six diesel engine, designated with the ETJ code. This engine is a robust, over-square design, featuring a bore of 107mm and a stroke of 124mm. The 16.2:1 compression ratio is typical for heavy-duty diesels, contributing to efficient combustion. The engine utilizes a diesel common rail fuel injection system, delivering highly pressurized fuel directly into the cylinders for optimized fuel atomization and combustion. The overhead valve (OHV) valvetrain, while seemingly dated compared to more modern designs, proved to be exceptionally durable and reliable. A turbocharger with an intercooler is employed to increase air density and boost power output. The six-speed manual transmission, a staple for heavy-duty applications, provides precise control and allows the driver to fully utilize the engine’s substantial torque. The manual transmission was favored by those who needed maximum control when towing or navigating challenging terrain.
Driving Characteristics
The 350 horsepower and 881 lb-ft of torque delivered by the 6.7L Cummins in this configuration translated to impressive real-world performance. While not as quick as lighter-duty trucks or those equipped with higher-output Cummins variants, this setup excelled at towing and hauling heavy loads. The manual transmission allowed for precise gear selection, enabling the driver to maintain optimal engine speed for the task at hand. The gear ratios were carefully chosen to provide a balance between low-end grunt for pulling and reasonable highway cruising speeds. Compared to the automatic transmission options, the manual offered a more direct connection to the engine and a greater sense of control, particularly when descending steep grades with a load. The substantial weight of the truck, combined with the torque characteristics of the engine, meant that acceleration was brisk rather than explosive.
Equipment & Trim Levels
The 2500/3500 Mega Cab I (2013-2018) offered a range of trim levels, with the 6.7L Cummins/manual transmission combination available on several. Standard features typically included air conditioning, power windows and locks, a basic audio system, and vinyl upholstery. Higher trim levels, such as Laramie and Limited, added features like leather upholstery, heated and ventilated seats, a premium audio system, navigation, and advanced safety technologies. The Mega Cab configuration itself was a significant upgrade, providing class-leading rear passenger space. Optional extras included a sunroof, upgraded wheels, and various towing packages.
Chassis & Braking
The RAM 2500/3500 featured a robust chassis designed to withstand the stresses of heavy-duty use. Both front and rear suspension utilized an independent multi-link design, providing a relatively comfortable ride considering the truck’s weight and intended purpose. Disc brakes were standard on all four wheels, providing ample stopping power. An Anti-lock Braking System (ABS) was also standard, enhancing safety during emergency braking situations. The heavy-duty suspension components and braking system were designed to handle the increased weight and loads associated with this variant.
Market Reception & Comparison
The 2013-2018 RAM 2500/3500 with the 6.7L Cummins and manual transmission received generally positive reviews. Critics praised its powerful engine, comfortable ride, and spacious interior. The manual transmission was appreciated by those who preferred a more engaging driving experience and greater control. Compared to the automatic transmission options, the manual offered slightly better fuel economy, although the difference was not substantial. Compared to the gasoline-powered RAM 2500/3500 models, the Cummins diesel offered significantly more torque and better fuel economy, making it the preferred choice for those who frequently towed or hauled heavy loads. The 3500 model, with its higher GVWR, was favored by those needing to tow even heavier trailers.
Legacy
The 6.7L Cummins engine, in all its iterations, has earned a reputation for exceptional durability and longevity. The manual transmission, while less common than the automatic, is also known for its reliability. These trucks, even with high mileage, continue to command strong resale values. Common maintenance items include regular oil changes, fuel filter replacements, and occasional repairs to the cooling system. The 2013-2018 RAM 2500/3500 Mega Cab I with the 6.7L Cummins and manual transmission remains a popular choice for those seeking a capable and reliable heavy-duty truck, and a testament to the enduring appeal of a well-engineered diesel powertrain.
