2008 Ford F-550 Super Duty Xl Chassis-power Stroke Turbo Diesel V8 -ccfx on 2040-cars

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Which is more fuel efficient, driving with a pickup's tailgate up or down?

Thanks to the smoke wand in the wind tunnel, you can actually see the difference in our video.
Should you drive with your pickup truck's tailgate up or down? It's an age-old controversy that's divided drivers for decades. Traditionalists will swear you should leave the tailgate down. Makes sense, right? It would seem to let the air flow more cleanly over the body and through the bed. But there's also a school of thought that argues trucks are designed to look and operate in a specific manner, and modern design techniques can help channel the airflow properly. So don't mess with all of that: Leave the tailgate up.

Ford Mustang GT350R adds a lot more than just a new letter [w/videos]

Okay Chevrolet, the ball is in your court. Ford served up one hell of a rebuttal to the track-focused Camaro Z/28, introducing the limited-production Mustang GT350R, complete with over 500 horsepower, over 400 pound-feet of torque and freaking carbon-fiber wheels. Carbon-fiber wheels. Seriously. It's because of those 19-inch hoops, along with some other changes, that Ford was able to slice 130 pounds from the already lightweight GT350 Track Pack. The wheels are responsible for a 13-pound reduction in unsprung weight per corner, while the removal of such superfluous things like the air conditioning, stereo, rear seats, trunk carpet, backup camera and tire inflator accounts for the rest of the weight reduction. Along with the lower weight, Ford has thoroughly reworked the GT350's aerodynamics, adding a simply monstrous rear wing and diffuser, along with vented wheel wells, a new hood vent that both extracts heat and reduces lift. Beside the aero aids, Ford has shod the carbon-fiber wheels in ultra-grippy Michelin Pilot Sport Cup 2 tires, just to guarantee the shiny side remains up. View 21 Photos Ford retained the standard GT350's 5.2-liter, flat-pane V8, Torsen limited-slip differential (complete with a 3.73 rear axle ratio), although as power figures haven't been published for the standard car, there's no way to know whether the GT350R received a power bump. What we do know, though, is that the GT350R will not be limited to the track. While that's certainly its natural habitat, owners will be able to register and drive this monster on public roads. Take a look at the official press release on the GT350R, available below. And also be sure to have a peek at both Ford's stock photos of the new car, as well as our full gallery of live images, direct from the Blue Oval's Detroit Auto Show press conference home at Joe Louis Arena. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

A cool boost to turbocharger performance

Since the advent of the forced-induction engine, we have been looking for ways to get every drop of performance we can. There are many approaches to getting additional power using better intercooling, water injection, or even adding nitrous oxide. One take on a short instant burst of power is being researched by Mahle and involves providing supercooled air to an engine, which allows it to burn a leaner fuel mixture and produce more power. The supercooling idea is not new and was examined by Ford in 1993 on the Mustang Mach III concept car, then brought up again in 2003 with the SVT F-150 Lightning concept. Ford called its system the SuperCooler; it was designed to work with any turbocharged or supercharged engine equipped with a water-to-air intercooler. The system on the Lightning concept used a small tank of antifreeze that was hooked up to the truck air conditioning compressor. The air conditioning compressor cooled the antifreeze down to about 30 degrees. The other side of the tank was hooked up to the air-to-water intercooler, which usually had a temperature over 100 degrees. Once the antifreeze was circulated from the tank into the intercooler, it would lower the intercooler temperature and provide for a cooler, denser air charge into the engine; the result was around 50 extra horsepower for a burst of about 30 seconds to a minute, depending on the size of the tank. The system for the Lightning was to be offered as a $750 option and would have been targeted towards drag racers and the like, as it could be used for a run down the drag strip and then re-cooled by the time the truck was back in line. The system was fairly non-intrusive – it only weighed about 25 pounds and did not require a new compressor or intercooler. But as with many concepts, it was ultimately scrapped. The technology was always stuck in the back of my mind, but with larger and more powerful engines being produced it could not find its place. With the advent of new fuel economy standards, we have seen small-displacement turbocharged engines pop up and they seem like the perfect candidate for this type of technology. Ford's EcoBoost 1.0-liter three-cylinder turbocharged engine, as used in the Fiesta and Focus, is one such candidate for this technology. It would add a negligent amount of weight but could provide a boost of 10 to 20 horsepower when needed, like merging onto the highway or catching up to traffic.