2001-2009 Dodge Ram 1500 III (DRDH) 5.7 (345 Hp) 4WD Automatic

The Dodge Ram 1500 (DR/DH) 5.7L 4WD Automatic represents a significant iteration in Dodge’s full-size pickup truck lineage, produced from 2001 through 2009. This generation marked a substantial departure from previous Ram designs, introducing a bolder, more modern aesthetic and a focus on enhanced interior comfort and capability. The 5.7-liter V8 engine paired with a four-speed automatic transmission and four-wheel drive system positioned this variant as a strong contender in the American full-size truck market, appealing to buyers needing a balance of power, towing capacity, and all-weather performance. Within the Ram 1500 lineup, this configuration occupied a mid-to-upper tier, offering a step up in performance from the base V6 models while remaining more accessible than the heavy-duty 2500 and 3500 series trucks.

Technical Specifications

Powertrain & Engine Architecture

The heart of the Ram 1500 5.7L was the EZA engine, a 5.7-liter (345 cubic inch) V8. This engine utilized a cast iron block with aluminum cylinder heads, a configuration common for American V8s aiming for durability and reasonable weight. The engine employed a multi-port fuel injection system, delivering fuel directly to each intake port for optimized combustion. The valvetrain featured two valves per cylinder, operated by a single overhead camshaft. The 9.6:1 compression ratio was a compromise between performance and the ability to run on readily available gasoline grades. The four-speed automatic transmission (typically the 42RE or 45RFE, depending on the year) was chosen for its robustness and suitability for truck applications. While not the most technologically advanced transmission available at the time, it provided smooth shifts and reliable operation under heavy loads. The 4WD system typically employed a part-time transfer case, allowing the driver to switch between two-wheel drive and four-wheel drive modes as needed.

Driving Characteristics

The 5.7L V8 delivered a noticeable step up in performance compared to the base V6 Ram 1500 models. With 345 horsepower and 390 lb-ft of torque, the truck offered ample power for everyday driving, towing, and hauling. The four-speed automatic transmission, while not offering the gear ratios of more modern transmissions, provided adequate performance. Acceleration from 0 to 60 mph typically fell in the 7.5 to 8.5 second range, depending on cab configuration, bed length, and overall weight. The automatic transmission’s gear ratios were geared towards maximizing towing capacity and low-end torque, rather than outright acceleration. Compared to a manual transmission equipped Ram 1500, the automatic offered greater convenience, especially in stop-and-go traffic, but at the expense of some fuel efficiency and driver engagement.

Equipment & Trim Levels

The Ram 1500 5.7L 4WD Automatic was available in a variety of trim levels, including ST, SLT, and Laramie. The base ST trim offered essential features such as air conditioning, power windows and locks, and a basic audio system. The SLT trim added features like upgraded upholstery, alloy wheels, and a premium sound system. The Laramie trim represented the top-of-the-line offering, with leather upholstery, woodgrain interior trim, and additional convenience features. Optional extras included a sunroof, navigation system, and upgraded towing packages. Interior upholstery ranged from cloth on the base models to leather on the higher trims. Dashboard configurations were relatively straightforward, prioritizing functionality and ease of use.

Chassis & Braking

The Ram 1500 DR/DH utilized a body-on-frame construction, a traditional design for full-size trucks. The front suspension featured an independent double-wishbone setup, while the rear suspension employed a multi-leaf spring configuration. This setup provided a comfortable ride quality, even when carrying heavy loads. Braking duties were handled by disc brakes on all four wheels, with ABS (Anti-lock Braking System) as standard equipment. The braking system was adequately sized for the truck’s weight and performance, providing confident stopping power. Stabilizer bars were typically included in the front suspension to reduce body roll during cornering.

Market Reception & Comparison

The Dodge Ram 1500 5.7L 4WD Automatic was generally well-received by critics and consumers alike. It was praised for its powerful engine, comfortable ride, and spacious interior. However, fuel economy was a common criticism, as the 5.7L V8 was not particularly fuel-efficient. Compared to the Ford F-150 and Chevrolet Silverado, the Ram 1500 offered a slightly more refined interior and a more distinctive exterior design. The 5.7L engine offered a good balance of power and reliability, although some owners reported issues with the cooling system and the automatic transmission over the long term. Fuel economy averaged around 14 mpg in combined driving, which was typical for a full-size truck of that era.

Legacy

The Dodge Ram 1500 DR/DH 5.7L 4WD Automatic remains a popular choice in the used truck market today. The 5.7L V8 engine is known for its durability and relatively simple maintenance requirements. While older models may require some maintenance and repairs, parts are readily available and relatively affordable. The truck’s robust construction and capable four-wheel drive system make it a suitable choice for a variety of tasks, from daily commuting to towing and hauling. The DR/DH generation Ram 1500 helped solidify Dodge’s reputation as a builder of capable and comfortable full-size trucks, paving the way for future generations of the Ram lineup.