Motor Co. engineers must take some sadistic pleasure in cooking up new ideas to torture test the auto maker's line of F-Series Super Duty pickups.
During a recent test drive of the upcoming '11 Super Duty lineup, this maniacal practice is all too evident.
Can a diesel-equipped Super Duty pull a 85,000-lb. (38,556-kg) Caterpillar front loader despite the fact its maximum tow-rating, when fitted with a fifth wheel, is 24,400 lbs. (11,068 kg)?
Despite seeming implausible, that doesn't deter the engineers from finding out at a rock quarry in Prescott, AZ. They wear devilish grins as the throttle opens wide, the truck frame groans for mercy and the wheels hop like a child's pogo stick against the massive weight. After this tortuous exercise, the front loader has crept about 3 ft. (0.9 m).
In another mine-is-bigger-than-yours test, a Super Duty F-550 chassis cab equipped with a flat bed hauls a Dodge Ram 5500 HD up steep inclines. In the bed of the Ram is a multi-ton boulder.
The over-the-top demonstrations are nifty parlor tricks, but they are hardly the type of tasks real-life customers will perform with their trucks.
The '11 Super Duty offers two engine choices: a 6.7L Power Stroke V-8 turbodiesel or 6.2L gasoline V-8. The truck also comes in multiple trim levels (XL, XLT, Lariat, King Ranch), cab configurations (Regular Cab, SuperCab, Crew Cab) and models (F-250, F-350, F-450 and F-550).
But most of the attention at this event focuses on the diesel;says about 70% of Super Duty buyers pick the oil burner.
The '11 model marks the first year Ford has brought development of the diesel in-house, following a split with longtime supplier Navistar International Corp.
The results are impressive. Fire up the new engine and there is little noticeable clatter typically associated with diesels, even modern ones. With windows up, it's hard to tell the engine is even running.
Ford engineers used some tricks to make the diesel purr like a gas engine. The exhaust manifold is moved to the other side of the V-8, cutting in half overall exhaust-system volume, reducing noise and heat and boosting performance.
Additionally, the common-rail, direct-injection system, supplied by RobertGmbH, delivers up to five injections per intake cycle using 8-hole piezo units. At idle, the system relies on two injections per cycle (instead of one normally), a big contributor to the diesel's ability to run quiet.
Even while towing more than 20,000 lbs. (9,072 kg) up a steep grade, the diesel Super Duty manages the load with little fuss. If not for quick glances in the rearview mirror, we'd be hard-pressed to tell we were towing anything.
The diesel's monumental 735 lb.-ft. (997 Nm) of torque and 390 hp supply the grunt and give the Super Duty bragging rights in the power department until, say, a crosstown rival should deliver even more torque.
The Super Duty has plenty of added electronic goodies to make trailering safer and easier. Standard equipment includes Ford's Trailer Sway Control System, which can determine from the yaw motion of the truck if the trailer is swaying. If so, the system either applies precise braking or reduces engine torque.
An optional integrated trailer brake also is available, allowing drivers to apply brakes to the trailer to stabilize it.
But perhaps most impressive is Ford's Hill Decent Control system. Borrowed from the Ford SVT F-150 off-road performance truck, HDC works with the antilock brakes to control the speed of descent without brake input. The system alleviates concerns the trailer will push the truck downhill.
The diesel is popular, but Super Duty customers who prefer gasoline get the all-new 6.2L V-8, which delivers 385 hp and 405 lb.-ft. (549 Nm) of torque.
Mike Harrison, Ford V-8 engine programs manager, says the cast-iron block was designed with durability in mind.
“This engine will run for many hundreds of thousands of miles,” he says.
The gas engine has plenty of low-end torque, and it achieves its peak by 4,500 rpm due to a SOHC architecture that results in a stiffer valvetrain, allowing optimized cam lift profiles. Great for light duties, such as landscaping, it boasts a top tow rating of 15,000 lbs. (6,804 kg).
Both gas and diesel engines are mated to an all-new 6R140 heavy-duty TorqShift 6-speed automatic transmission. Shifting is smooth during our test drive, and the unit rarely hunts for the correct gear.
The transmission's Progressive Range Select system prohibits upper level gears from being engaged while the truck is heavily loaded or towing on grades, eliminating the potential for high speeds.
The Super Duty is designed to be a workhorse, not a daily commuter, so the highway portion of our drive is rough when the bed is empty. But it performs better on the highway than its predecessor thanks to some tweaking of the leaf springs and adjusted spring rate.
With so much engineering firepower devoted to the truck's capabilities, the interior doesn't get the attention it deserves.
The craftsmanship and sturdy materials fit with the rugged exterior. Gaps between interior panels are uniform, and controls are easily accessible and intuitive.
The Super Duty borrows its new 10-way power seats from its little brother, the F-150. Available in both cloth and leather, the new seats are soft and wide, able to fit customers of broad proportions.
Ford touts the interior as an “office on wheels,” citing the vast amount of time most buyers will spend on the job.
To accommodate this consumer group, Ford packs the cab with storage cubbies and a new flow-through middle console that can hold laptops, files, cell phones or whatever else is best kept out of sight. A 110-volt socket and 12-volt powerpoints also are handy for small electronics.
The exterior receives a mild massaging rather than a full-fledged restyling. Perhaps the most dramatic addition is the “inverted power dome” on the hood.
The grille gets larger openings to provide for maximum engine cooling, while a deeper air dam is added to deflect air from the underpinnings for better aerodynamics. Rounding out front fascia changes are gigantic headlamps, which Ford says are the largest ever on a Super Duty.
The “bigger is better” motif continues around back with the biggest Blue Oval badge ever placed on a Ford vehicle.
The Super Duty builds on a strong foundation created by its predecessors, which have had great success over the years. It is being assembled at Ford's Kentucky truck plant in Louisville.
This is a pure work truck through and through, capable of pulling or pushing just about anything.
'11 Ford F-250 Super Duty
Vehicle type: Front-engine, 4×4 5-passenger pickup; SuperCab with 6.75-ft. [2-m] box
Engine: 6.7L OHV V-8 turbodiesel; compacted graphite iron block/aluminum heads
Power: 390 hp @ 2,800 rpm
Torque: 735 lb.-ft. (997 Nm) @ 1,600 rpm
Bore × stroke (mm): 99.0 × 108.0
Compression ratio: 16.2:1
Transmission: 6-speed automatic
Wheelbase: 141.8 ins. (360.1 cm)
Overall length: 232.4 ins. (590.3 cm)
Overall width: 79.9 ins. (203.0 cm)
Curb weight: 7,237 lbs. (3,283 kg)
Base price: $41,545
Fuel economy: N/A
Competition: Ram HD, GMC Sierra Denali HD, Chevrolet Silverado HD
- Handles great off-road
- Large seats
- Best-in-class power
- Not as great on-road
- Monstrous Blue Oval
- Bragging rights fleeting