2026 Ram Heavy Duty near Kingsport, TN

The 2026 Ram Heavy Duty lineup includes the Ram 2500 and Ram 3500 in Regular Cab, Crew Cab, and Mega Cab configurations with available 4x2 and 4x4 drivetrains. Ram engineers designed these trucks around a ladder-type frame, steel cab structure, and double-wall steel pickup box to support towing, hauling, and demanding commercial use. The lineup combines high-capacity suspension systems, large-displacement engine options, heavy-duty axles, and electronically managed transmissions.

HEMI® V-8 Engine Produces Consistent Gasoline Performance

The standard gasoline engine in the 2026 Ram Heavy Duty lineup is a 6.4-liter HEMI® V-8. This engine uses a 90-degree V-8 layout with variable cam timing and a displacement of 392 cubic inches, or 6,417 cubic centimeters. Ram rates the engine at 405 horsepower at 5,600 rpm and 429 lb-ft of torque at 4,000 rpm. The maximum engine speed is electronically limited to 5,800 rpm.

The engine uses a deep-skirt cast-iron block with cross-bolted main bearing caps for increased structural rigidity under load. Ram equips the engine with aluminum cylinder heads containing hemispherical combustion chambers. The valvetrain uses pushrod-operated overhead valves with 16 valves total. Eight hydraulic lifters and eight deactivating lifters use roller followers to support engine operation across varying load conditions.

Fuel delivery comes from a sequential multiport electronic returnless fuel injection system. The compression ratio measures 10.0:1, and the engine operates on regular 87-octane unleaded gasoline. The engine carries a 7.0-quart oil capacity and a 16.6-quart coolant capacity. Emissions management includes heated oxygen sensors, three-way catalytic converters, cooled electronic exhaust-gas recirculation, and individual cylinder fuel control systems.

Cummins® Turbo Diesel Generates Heavy-Duty Torque Output

Drivers requiring increased torque output can select the 6.7-liter Cummins® High Output turbo diesel inline-6 engine. This powertrain produces 430 horsepower at 2,800 rpm and 1,075 lb-ft of torque at 1,800 rpm. The engine displacement measures 408 cubic inches, or 6,690 cubic centimeters.

The Cummins® diesel uses an inline-6 cylinder layout with turbocharging and intercooling. The engine combines a compacted graphite iron block with a cast-iron cylinder head to support high-load durability. Pushrod-operated overhead valves control 24 valves with hydraulic lifters. Ram equips the diesel engine with an electronic high-pressure common-rail fuel injection system for fuel delivery precision and combustion management.

The engine uses a 16.2:1 compression ratio and operates on ultra-low sulfur diesel fuel. The maximum high-idle engine speed reaches 3,200 rpm. Ram specifies a 12.0-quart oil capacity with filter and a 23.8-quart coolant capacity. Selective catalytic reduction manages the output of diesel emissions.

Eight-Speed TorqueFlite HD Transmissions Manage Power Delivery

The 2026 Ram Heavy Duty lineup uses ZF TorqueFlite HD eight-speed automatic transmissions paired with both available engines. Gasoline-powered models equipped with the 6.4-liter HEMI® V-8 use the TorqueFlite HD 8HP75 transmission. Diesel-equipped models use the TorqueFlite HD 8AP1075 transmission.

Both transmissions use adaptive electronic control systems and provide automatic operation or Electronic Range Select manual control. The transmission design incorporates five clutch packs with only two open clutches in any gear. Torque converter lockup includes a turbine torsional damper to support low lockup speeds through first to eighth gears.

The gear ratios remain identical across both transmissions. First gear uses a 4.71 ratio. Second gear uses a 3.14 ratio, followed by 2.10 in third gear and 1.67 in fourth gear. Fifth gear measures 1.29, sixth gear uses a direct 1.00 ratio, seventh gear measures 0.84, and eighth gear uses a 0.67 overdrive ratio. Reverse gear uses a 3.30 ratio.

Gasoline models offer axle ratios of 3.73 and 4.10. Diesel-equipped trucks use a 3.42 axle ratio configuration.

Transfer Cases Support Four-Wheel-Drive Operation

Ram offers multiple transfer case systems across the 2026 Ram Heavy Duty lineup. Models equipped with the 6.4-liter HEMI® V-8 can use the BW 44-46 or BW 44-47 transfer cases. These systems use electric shifting and part-time four-wheel-drive operation.

The transfer cases provide four operating modes consisting of 2WD, 4WD High, Neutral, and 4WD Low. The low-range ratio measures 2.64. Ram does not use a center differential in these systems.

High-output diesel models use the BW 44-48 transfer case. This system also uses electric shifting and part-time four-wheel-drive functionality with identical operating modes and the same 2.64 low-range ratio.

Heavy-Duty Axles Increase Load-Carrying Strength

Ram equips 4x4 models with an AAM 9.25-inch beam front axle featuring center disconnect functionality. Rear axle configurations vary by model and towing classification.

The Ram 2500 and standard Ram 3500 models use an AAM 11.5-inch beam rear axle. Power Wagon® configurations include locking differentials and limited-slip differential capability. Ram 3500 Max Tow models use a larger AAM 12.0-inch beam rear axle to support higher towing and load requirements.

Suspension Systems Balance Stability and Load Management

The Ram 2500 uses a front three-link suspension system with a track bar, coil springs, stabilizer bar, and solid axle configuration. Four-wheel-drive Power Wagon® models add a disconnecting sway bar system to improve suspension articulation.

Rear suspension on the Ram 2500 uses a five-link design with a track bar, coil springs, a stabilizer bar, and solid axle construction. Available rear air bags increase support during towing and cargo hauling conditions.

The Ram 3500 uses a similar front three-link coil-spring suspension system with a track bar and stabilizer bar. Rear suspension differs significantly from the 2500 by using two-stage longitudinal leaf springs with optional supplemental air bags.

Brake Systems Use Large Disc Dimensions and ABS Control

The 2026 Ram Heavy Duty uses four-wheel disc brakes with anti-lock braking capability. Front brakes measure 14.17 x 1.54 inches and use twin-piston pin-slider calipers. Rear brakes measure 14.09 x 1.34 inches and also use twin-piston pin-slider calipers.

Gasoline-powered Ram 2500 models use a dual-rate tandem diaphragm vacuum-assisted brake system. Diesel-powered Ram 2500 models and all Ram 3500 trucks use hydro-boost brake assist systems for increased braking support under heavy load conditions.

Electrical Systems Support Commercial Equipment Demands

Ram equips the 6.4-liter HEMI® V-8 and standard 6.7-liter diesel models with a 180-amp alternator. Laramie®, Longhorn®, and Limited diesel trims include a 220-amp alternator. Ram also offers optional dual alternator systems depending on engine selection and trim level.

Gasoline-powered trucks use a maintenance-free Group 65 battery rated at 730 cold-cranking amps. Diesel models use dual maintenance-free Group 65 batteries rated at 730 cold-cranking amps each.

Cargo Box Dimensions, Support Equipment, and Material Transport

Ram offers a 6-foot 4-inch cargo box and an 8-foot cargo box. The shorter cargo box provides 57.5 cubic feet of SAE cargo volume, while the longer box provides 74.7 cubic feet.

The 6-foot 4-inch box measures 76.3 inches in floor length with the tailgate closed. The 8-foot box measures 98.3 inches in floor length. Both configurations provide a cargo width of 66.4 inches and 51 inches between the wheelhouses. Cargo box depth measures 20.1 inches on the shorter box and 20.2 inches on the longer box.

Exterior Dimensions Vary Across Cab and Wheelbase Configurations

The 2026 Ram Heavy Duty lineup includes multiple wheelbase and body configurations. Ram 2500 Regular Cab models with the 8-foot box use a 140.2-inch wheelbase and measure 232 inches in overall length. Crew Cab models equipped with the 6-foot 4-inch box use a 149-inch wheelbase and measure 238.8 inches in length. Crew Cab models with the 8-foot box use a 169-inch wheelbase and measure 260.8 inches long.

Mega Cab 2500 models use a 160.4-inch wheelbase and measure 249.9 inches in overall length. Ground clearance on standard 4x4 configurations reaches approximately 13.1 inches, depending on configuration.

Power Wagon® and Rebel Crew Cab models use a 149.3-inch wheelbase with increased off-road measurements. The Power Wagon® provides 14.2 inches of ground clearance and a 29.4-degree approach angle. The Rebel provides 13.3 inches of ground clearance with a 26.6-degree approach angle.

Interior Space Prioritizes Passenger Capacity and Cabin Functionality

Regular Cab models provide front seating for either three or two occupants. Crew Cab and Mega Cab models provide front and rear seating in 3/3 or 2/3 configurations.

Front headroom measures 39.8 inches in Regular Cab models and 40.9 inches in Crew Cab and Mega Cab models. Front legroom measures 40.9 inches across all cab styles. Shoulder room measures 65.9 inches in the front row across all configurations.

Crew Cab rear legroom measures 40.2 inches, while Mega Cab rear legroom increases to 43.1 inches. Rear shoulder room measures 65.6 inches in both Crew Cab and Mega Cab models.

Interior volume measurements vary by cab style. Regular Cab models provide 62.5 cubic feet of front interior volume. Crew Cab and Mega Cab models provide 63.9 cubic feet in the front seating area. Rear interior volume measures 60.7 cubic feet in Crew Cab models and 66 cubic feet in Mega Cab models.

Visit Friendship CDJR of Bristol for a Test Ride

Drivers interested in evaluating the 2026 Ram Heavy Duty can explore the available engine options, cab configurations, suspension systems, and drivetrain combinations during a scheduled test drive. The truck lineup provides distinct configurations for towing, cargo transport, commercial operation, and off-road capability. Friendship CDJR of Bristol near Kingsport, TN, offers access to the 2026 Ram Heavy Duty lineup for drivers seeking detailed information and hands-on evaluation. A scheduled visit also allows drivers to compare gasoline and diesel powertrains, cargo box lengths, and four-wheel-drive systems directly.