The Ford F-350 Super Duty IV, produced from 2017 to 2019, represents the fourth generation of Ford’s heavy-duty pickup truck line. This particular variant, featuring a 6.7-liter turbocharged diesel V8 engine producing 450 horsepower and paired with a six-speed automatic transmission (TorqShift), was positioned as a robust work truck capable of significant towing and hauling. Offered with a Regular Cab and Long Box configuration, it catered to buyers needing a powerful, no-nonsense pickup for commercial or demanding personal use. The “SRW” designation indicates a Single Rear Wheel axle configuration, differentiating it from Dual Rear Wheel (DRW) models designed for even heavier loads.
Technical Specifications
| Brand | Ford |
| Model | F-350 Super Duty |
| Generation | F-350 Super Duty IV Regular Cab Long box |
| Type (Engine) | 6.7d V8 (450 Hp) Automatic SRW |
| Start of production | 2017 year |
| End of production | 2019 year |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 3 |
| Doors | 2 |
| Fuel Type | Diesel |
| Weight-to-power ratio | 6.7 kg/Hp, 149.1 Hp/tonne |
| Weight-to-torque ratio | 2.4 kg/Nm, 419.8 Nm/tonne |
| Power | 450 Hp @ 2800 rpm |
| Power per litre | 67.6 Hp/l |
| Torque | 1267 Nm @ 1800 rpm (934.49 lb.-ft. @ 1800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine displacement | 6653 cm3 (405.99 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 99.06 mm (3.9 in.) |
| Piston Stroke | 107.95 mm (4.25 in.) |
| Compression ratio | 16.2:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | OHV |
| Engine oil capacity | 12.3 l (13 US qt | 10.82 UK qt) |
| Coolant | 33.2 l (35.08 US qt | 29.21 UK qt) |
| Kerb Weight | 3018-3044 kg (6653.55 – 6710.87 lbs.) |
| Trunk (boot) space – minimum | 2222 l (78.47 cu. ft.) |
| Fuel tank capacity | 110 l (29.06 US gal | 24.2 UK gal) |
| Permitted trailer load with brakes (12%) | 9752 kg (21499.48 lbs.) |
| Length | 5888 mm (231.81 in.) |
| Width | 2032 mm (80 in.) |
| Width including mirrors | 2690 mm (105.91 in.) |
| Height | 1976 mm (77.8 in.) |
| Wheelbase | 3597 mm (141.61 in.) |
| Front track | 1735 mm (68.31 in.) |
| Rear (Back) track | 1707 mm (67.2 in.) |
| Front overhang | 970 mm (38.19 in.) |
| Rear overhang | 1321 mm (52.01 in.) |
| Ride height (ground clearance) | 216 mm (8.5 in.) |
| Approach angle | 17.5° |
| Departure angle | 18.7° |
| Ramp-over (brakeover) angle | 20.0° |
| 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 | 6 gears, automatic transmission TorqShift |
| Front suspension | Independent coil spring, Trailing arm |
| Rear suspension | Rigid axle suspension, Leaf spring |
| Front brakes | Ventilated discs, 363 mm |
| Rear brakes | Ventilated discs, 363 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Cone worm with recirculation balls |
| Power steering | Hydraulic Steering |
| Tires size | 245/75 R17 |
| Wheel rims size | 17 |
Powertrain & Engine Architecture
The heart of this F-350 variant is the 6.7-liter Power Stroke Turbo Diesel V8. This engine, designated with various internal codes depending on the specific year and calibration, is a robust and highly capable powerplant. It utilizes a common-rail direct fuel injection system, delivering fuel at extremely high pressures for optimized combustion. The engine features an overhead valve (OHV) valvetrain, a design choice prioritizing durability and low-end torque. A single turbocharger with an intercooler provides forced induction, boosting power and efficiency. The 6.7L Power Stroke is known for its substantial low-end torque, making it ideal for heavy hauling and towing. The six-speed TorqShift automatic transmission is specifically designed to handle the engine’s high torque output. It features a wide gear ratio spread, allowing for both strong acceleration and efficient highway cruising.
Driving Characteristics
The 450 horsepower and 1267 lb-ft of torque delivered by this combination translate to impressive real-world performance. While not as quick as lighter-duty pickups, the F-350 with this engine and transmission provides ample power for accelerating with a heavy load or maintaining highway speeds even when towing. The TorqShift transmission is programmed for smooth, deliberate shifts, prioritizing stability and control over outright speed. Compared to the gasoline-powered F-350 variants, the diesel offers significantly more torque at lower RPMs, making it far more capable for demanding tasks. Compared to higher-output diesel variants (often exceeding 475 hp), this version offers a balance between power and fuel economy, and generally lower maintenance costs.
Equipment & Trim Levels
The F-350 Super Duty IV Regular Cab Long Box 6.7d V8 Automatic SRW typically came standard with features geared towards work-truck functionality. This included a heavy-duty vinyl interior, air conditioning, and a basic audio system. Optional extras included power windows and locks, upgraded audio systems, and various towing packages. Trim levels like XL, XLT, and Lariat offered progressively more luxurious features, such as leather upholstery, heated seats, and advanced infotainment systems. However, even the base XL trim provided a durable and functional interior suitable for demanding work environments.
Chassis & Braking
The F-350 Super Duty chassis is built for strength and durability. The front suspension utilizes an independent coil spring setup with a trailing arm design, providing a comfortable ride while maintaining robust load-carrying capacity. The rear suspension employs a traditional leaf spring setup, known for its ability to handle heavy loads. Braking duties are handled by ventilated discs at all four corners, providing ample stopping power even when heavily loaded. An Anti-lock Braking System (ABS) is standard. The SRW configuration utilizes a single rear wheel per side, offering a balance between load capacity and maneuverability.
Market Reception & Comparison
The 2017-2019 Ford F-350 Super Duty with the 6.7-liter diesel and automatic transmission was generally well-received by critics and buyers alike. It was praised for its robust powertrain, impressive towing capacity, and comfortable ride. Fuel economy, while not exceptional, was considered reasonable for a heavy-duty pickup. Compared to the gasoline-powered F-350 models, the diesel offered superior torque and towing capability, but at a higher initial cost. Compared to the higher-output diesel variants, this 450 hp version offered a more affordable entry point into the heavy-duty diesel market.
Legacy
The 6.7-liter Power Stroke diesel engine has proven to be a reliable and durable powerplant. While some early models experienced issues with the fuel injection system, these were largely addressed through updates and revisions. Today, well-maintained examples of this F-350 variant are still highly sought after in the used truck market. The combination of power, capability, and relative reliability makes it a popular choice for buyers needing a heavy-duty pickup for work or recreational purposes. The TorqShift transmission has also proven to be a durable unit, capable of withstanding the stresses of heavy towing and hauling.
