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Diesel Power finds the ultimate modified oil-burner

For nine years, Diesel Power magazine has run the Diesel Power Challenge, this year's grindfest being "a week-long torture test that features seven events, nine trucks, 8,000 horsepower, and nearly 15,000 pound-feet of torque." The road to being crowned "the most powerful truck" starts with a dyno run, and then continues through the completion of a CDL-style obstacle course, an eighth-of-a-mile drag race while towing a 10,000-pound trailer, a quarter-mile drag race without a trailer, a fuel economy test in the mountains and finally a sled-pulling test through a 300-foot-long packed-mud pit.
What kind of trucks get into such a fight? Last year's winner, for instance - who upgraded his truck this year to prove he didn't "luck into the win" - drives a 2008 Ford F-250 Super Duty with a 6.4-liter Power Stroke V8 upgraded with a custom intake, Elite Diesel triple turbos and a two-stage nitrous system. Another competitor has a 2005 Dodge Ram 2500 powered by a 5.9-liter Cummins inline-six, upgraded with Garrett turbos, dual-stage nitrous, a seven-inch exhaust stack and twin fans built into the bed to cool the Sun Coast Omega transmission. The numbers on that truck: 1,255 horsepower, and 2,063 pound-feet of torque at the wheels. Naturally, as the image above might suggest, things don't always end well.
You'll find all five videos covering this years challenge below. A scene in the dyno video sums it all up perfectly: a competitor leaves his nitrous on too long and the crew is treated to some ominous poppings, he leans out the window, throws both hands up and shouts, "Amer'ca!"

GM recalling 250,000 SUVs over door electronics

After a door-fire investigation that dates back to February, the National Highway Traffic Safety Administration has officially announced a recall today that affects around 250,000 General Motors SUVs for a faulty driver's door module. The recall applies to the Buick Rainier, Chevrolet Trailblazer, GMC Envoy, Isuzu Ascender and Saab 9-7X from the 2006 and 2007 model years, as well as the 2006 Chevrolet Trailblazer EXT and GMC Envoy XL for vehicles sold and/or registered in the Snow Belt.
Road salt use in these midwestern and northern states can lead to corrosion of the driver's door module on these GMT360 and GMT370 vehicles, which allows water to come in contact with the circuit board. If shorted out, the vehicle's power door locks and power windows will not work, and could possibly lead to overheating and, in some circumstances, a fire. No official word on how many total vehicles caught on fire, but back in June, 28 fires had been reported to the government agency. A fix for the problem is still being worked out, but all affected vehicle owners will be notified by GM.
Scroll down for the official NHTSA statement.

2014 Chevrolet Corvette Stingray Convertible is a Swiss hit

We've just received an early peek at the 2014 Chevrolet Corvette Stingray Convertible here at the Geneva Motor Show. General Motors was kind enough to let us attend the final dress-rehearsal for its press conference scheduled for tomorrow's opening media day, and we've come away with a good look at the droptop C7 in person.
In the metal, the new Corvette Convertible seems somehow less avant-garde than the Coupe, even in Z51 Performance Package guise. That's not necessarily a bad thing - more of an observation. That initial impression may be because the C7's new greenhouse is one of its most prominent departures from Corvettes past. While we didn't get to see the top erected, there's no rear side window in the stock images that Chevy has already released, suggesting the C7 convertible's profile will look a lot like its C6 predecessor. And with the new power tonneau cover in place, there are also no rear ducts that come as part of the Z51 package (they've been moved under the car).
As with its predecessor, the tonneau is a handsome double-bubble piece, and the body-color "waterfall" element into the cabin between the seats has made it to the new model as well. Thus, the overall look with the top down should be a bit more familiar to prior-gen C6 owners - if you're one of those put off by the C7's new shape, you'll probably appreciate the convertible bodystyle more than the coupe.