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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!"

NHTSA probing Ram recall pace, communication

The National Highway Traffic Safety Administration has announced that it's looking into Chrysler Group's handling of a pair of recalls affecting roughly one million Ram pickup trucks. Reuters is reporting that the regulatory agency is focusing on the availability (or lack thereof) of parts and "poor communications" from the automaker in its investigation.
"Customers have been advised in accordance with the regulations governing recalls," Chrysler spokesman Eric Mayne told Reuters via email. "We are continually replenishing our supply of replacement parts. Chrysler Group regrets any inconvenience our customers may have experienced."
NHTSA disagrees, arguing that the recalls, which affect 972,000 trucks from 2003 to 2012, are being delayed by the lack of parts.

Chrysler recalls AWD 300, Charger, Ram 1500 over ZF transmission

What do the Chrysler 300, Dodge Charger and Ram 1500 all have in common? Yes, they're all Chrysler products, and two of them are based on the same platform. And we're sure you could find more similarities between them all, but the common trait we're looking at here is that, while they all come standard in rear-drive form, they're also available with all-wheel drive. And it's the transmission in those models that's the subject of the latest recall notice issued by the National Highway Traffic Safety Administration.
The output shaft on the eight-speed automatic transmission supplied by ZF to Chrysler for the AWD versions of the 300, Charger and Ram 1500 is apparently prone to fracture. That in the end could leave the vehicle without power and could, according to the NHTSA investigation, increase the chance of a crash. The vehicle could also roll away if even if left in Park without the handbrake applied.
That's why Chrysler is calling in 4,194 examples of those three models from the 2013 model year. Dealers will be responsible for inspecting the transmissions and, where necessary, replace the entire unit. See the full recall notice below for all the details.