The RAM 2500/3500 Crew Cab Long II (DT) with the 6.4 Hemi V8 engine and automatic transmission represents a significant offering in the heavy-duty pickup truck segment. Produced from 2019 through 2025, this configuration occupied a sweet spot in the RAM lineup, providing a substantial increase in capability and power over the base engine options while remaining more accessible than the Cummins diesel variants. Positioned as a workhorse for those needing serious towing and hauling capacity without the added cost and complexity of a diesel, the 6.4 Hemi became a popular choice for contractors, ranchers, and anyone requiring a robust full-size pickup.
Technical Specifications
| Brand | RAM |
| Model | 2500/3500 |
| Generation | 2500/3500 Crew Cab Long II (DT) |
| Type (Engine) | 2500 6.4 Hemi V8 (410 Hp) Automatic |
| Start of production | 2019 |
| End of production | 2025 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 5-6 |
| Doors | 4 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 7.1 kg/Hp, 140.1 Hp/tonne |
| Weight-to-torque ratio | 5 kg/Nm, 198.8 Nm/tonne |
| Power | 410 Hp @ 5600 rpm |
| Power per litre | 63.9 Hp/l |
| Torque | 582 Nm @ 4000 rpm, 429.26 lb.-ft. @ 4000 rpm |
| Maximum engine speed | 5800 rpm |
| Engine layout | Front, Longitudinal |
| Engine displacement | 6417 cm3, 391.59 cu. in. |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 103.9 mm, 4.09 in. |
| Piston Stroke | 94.6 mm, 3.72 in. |
| Compression ratio | 10:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | OHV |
| Engine oil capacity | 6.6 l, 6.97 US qt | 5.81 UK qt |
| Coolant | 15.7 l, 16.59 US qt | 13.81 UK qt |
| Kerb Weight | 2927 kg, 6452.93 lbs |
| Max. weight | 4536 kg, 10000.17 lbs |
| Max load | 1609 kg, 3547.24 lbs |
| Trunk (boot) space – maximum | 2115 l, 74.69 cu. ft |
| Permitted trailer load with brakes (12%) | 6613 kg, 14579.17 lbs |
| Length | 6626 mm, 260.87 in |
| Width including mirrors | 2120 mm, 83.46 in |
| Height | 1983 mm, 78.07 in |
| Wheelbase | 4293 mm, 169.02 in |
| Front track | 1735 mm, 68.31 in |
| Rear (Back) track | 1729 mm, 68.07 in |
| Ride height (ground clearance) | 282 mm, 11.1 in |
| Minimum turning circle (turning diameter) | 16.3 m, 53.48 ft |
| Approach angle | 18.7° |
| Departure angle | 22.5° |
| Ramp-over (brakeover) angle | 19.1° |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 8 gears, automatic 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) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 275/70 R18 E; 285/60 R20E |
| Wheel rims size | 8.0J x 18; 8J x 20 |
INTRODUCTION
The 2019-2025 RAM 2500/3500 Crew Cab Long II (DT) featuring the 6.4-liter Hemi V8 engine and automatic transmission is a heavy-duty pickup truck designed for demanding tasks. Built on the DT platform, this generation represented a significant leap forward in terms of interior refinement, technology, and capability compared to previous iterations. The “Crew Cab Long” configuration offered a spacious interior and a long bed, maximizing both passenger comfort and cargo capacity. This particular variant aimed to bridge the gap between the base engine options and the more expensive, diesel-powered models, offering a compelling blend of power, efficiency, and value.
Powertrain & Engine Architecture
At the heart of this RAM variant lies the 6.4-liter (391.59 cubic inches) Hemi V8 engine, internally designated as the 6.4L HEMI. This engine is a naturally aspirated, overhead valve (OHV) design, utilizing a cast iron block and aluminum cylinder heads. It features multi-port fuel injection and a compression ratio of 10:1. The engine produces 410 horsepower at 5600 rpm and 429 lb-ft of torque at 4000 rpm. The valvetrain employs two valves per cylinder. The engine oil capacity is 6.6 liters (6.97 US quarts), and requires a specific oil specification.
Paired with the 6.4 Hemi is an eight-speed automatic transmission. This transmission, sourced from ZF, provides smooth and efficient shifting, contributing to improved fuel economy and enhanced towing performance. The transmission’s gear ratios are optimized to deliver strong acceleration and maintain engine efficiency across a wide range of driving conditions. The automatic transmission also features a tow/haul mode, which alters shift points to better manage heavy loads.
Driving Characteristics
The 6.4 Hemi-equipped RAM 2500/3500 delivers a robust driving experience. While not as fuel-efficient as the smaller engine options, it provides ample power for towing and hauling heavy loads. The eight-speed automatic transmission helps to keep the engine in its optimal power band, resulting in responsive acceleration. Compared to the diesel variants, the 6.4 Hemi offers a more traditional V8 sound and feel, and generally quicker acceleration when unladen. However, it lacks the diesel’s superior low-end torque, which is particularly noticeable when towing extremely heavy trailers. The gear ratios in the eight-speed automatic are well-chosen, providing a good balance between acceleration and fuel economy. The truck feels planted and stable, even when carrying a significant payload.
Equipment & Trim Levels
The 6.4 Hemi engine was typically available on higher trim levels of the RAM 2500/3500, such as the Laramie, Longhorn, and Limited. Standard features included a premium interior with cloth or leather upholstery, a user-friendly infotainment system with a touchscreen display, and a comprehensive suite of safety features. Optional extras included a sunroof, heated and ventilated seats, a premium sound system, and advanced driver-assistance technologies such as adaptive cruise control and lane departure warning. The Crew Cab configuration provided ample space for passengers, while the long bed offered a generous amount of cargo space.
Chassis & Braking
The RAM 2500/3500 utilizes a robust chassis designed to withstand the stresses of heavy-duty use. Both front and rear suspension systems employ independent multi-link designs, providing a comfortable ride and good handling characteristics. The braking system features disc brakes on all four wheels, providing ample stopping power. An Anti-lock Braking System (ABS) is standard. Steering is rack and pinion with hydraulic power assist. Tire sizes varied depending on the trim level and wheel size, with options including 275/70 R18 E and 285/60 R20E tires.
Market Reception & Comparison
The 6.4 Hemi-equipped RAM 2500/3500 received generally positive reviews from critics. It was praised for its powerful engine, comfortable ride, and well-appointed interior. Compared to the base V6 engine, the 6.4 Hemi offered a significant increase in performance and towing capacity. Compared to the Cummins diesel variants, it was seen as a more affordable option, albeit with slightly lower fuel economy and towing capacity. Reliability reports have been generally favorable, with the 6.4 Hemi proving to be a durable and dependable engine. Fuel economy, while not a strong point, was considered acceptable for a heavy-duty pickup truck.
Legacy
The 6.4 Hemi engine has become a mainstay in the RAM lineup, known for its reliability and performance. The 2019-2025 RAM 2500/3500 Crew Cab Long II (DT) with this engine continues to hold its value in the used car market, appealing to buyers who need a capable and comfortable heavy-duty pickup truck. The powertrain’s proven durability and relatively straightforward maintenance requirements contribute to its ongoing popularity. This configuration remains a strong contender for those seeking a powerful and versatile truck without the added cost and complexity of a diesel engine.
