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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 investigating Ram 1500 models for rear differential failure

The National Highway Traffic Safety Administration is investigating Fiat Chrysler Automobiles and its Ram brand following a number of reports regarding the 2005 Dodge Ram 1500 pickup. According to 15 consumer complaints, the trucks' rear differential locked up while in other cases, the driveshaft separated at its connection to the diff.
Nearly half of the reports claim the truck was traveling at or above 50 miles per hour, while two consumers reported that the diff lockup/driveshaft separation sent their pickups into a spin. Most troubling, though, is that consumers reported little to no sound indicating there was a problem with their truck.
We reached out to Ram for additional information, such as how many vehicles may be affected or what equipment might be fitted that could cause the issue. Unfortunately, the company wasn't willing to elaborate on specifics.

Dodge reveals a few of the goodies in the Demon crate

One of the teaser trailers for the eagerly anticipated Dodge Challenger Demon featured a big crate full of goodies for the car. As with the car, though, Dodge was a bit coy about what was inside, simply saying there were 18 items, consisting of tools and parts. Now we know what tools the car gets, and they're some very nice Snap-On pieces. All of the tools and accessories are branded with the Demon logo. And the tools included should be perfect for easy tire changes at the track. Specifically, the tools include a hydraulic jack, cordless impact wrench with charger, torque wrench, and a tire pressure gauge. There's also a fender cover to protect the paint when working under the hood, and a nice carrying bag with the Demon emblem on the side. And, naturally, all of the tools are limited-edition units made specifically to accompany the Demon. If you want to do anything more involved than wheel swaps, you'll need to supply a few tools of your own. But this should be good for the weekend drag racer or autocross driver who wants to drive down to the course on street tires, then throw on the sticky rubber at the track. Also, as you may have noted, these tools only constitute six items in Dodge's count, leaving 12 others that must be car parts. We know that among the parts are some factory Demon wheels, and items that Dodge describes as "Direct Connection Performance Parts" and the "Demon Track Pack System." Details on these remain scarce, but they will probably be revealed closer to the car's debut date of April 11. Related Video: