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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!"

What does Jeep have cooking with this stretched Cherokee?

Chrysler has been spotted testing what appears to be a stretched Jeep Cherokee prototype. Which seems odd, considering that Jeep already makes a Grand Cherokee, and that's an entirely different model. The question then is just what the company has in the works here. We don't know for sure – but we do have some ideas. We're anticipating a new Grand Wagoneer to serve as the brand's flagship model, but stretching the Cherokee's wheelbase to leapfrog the Grand Cherokee's would take more than eight inches – and stretching a "compact" platform to get there wouldn't seem to make a lot of sense. Alternatively Jeep could be looking to wedge a new model into its lineup in between the Cherokee and Grand Cherokee, potentially offering a third row of seats and wearing the Wagoneer name - sans the "Grand" - as part of a new range of seven-seaters. Just what the point would be, however, when the Dodge Durango already offers three rows based on the same platform as the Grand Cherokee, is a bit of a mystery. Another possibility is that it's not a Jeep at all, but rather a Dodge. The brand is in need of a replacement for the current Journey, and we're also waiting to see what FCA does to replace the Grand Cherokee since it unveiled the Chrysler Pacifica to replace the Town and Country. More of a crossover approach could take the Cherokee's Compact US Wide (CUSW) platform as its starting point, but stretched like this prototype to offer more space. Whatever it is, we're sure this won't be the last we'll have seen of it, so watch this space. Related Video:

Chrysler recalling 280k Dodge Ram 1500 pickups over axle seizures

Following a June investigation by the National Highway Traffic Safety Administration, Fiat Chrysler Automobiles will be recalling 280,000 Dodge Ram pickups from model year 2005. The issue, NHTSA told The Detroit News, centered on a loose pinion nut, which could cause the rear axle to seize and, potentially, the driveshaft to detach. The affected vehicles were built between January of 2004 and August of 2005, while of the 280,000 trucks, only 257,000 were sold in the US market. According to The News, the recall will begin on February 13, and will see owners report to dealerships to have "a retention feature" added to the pinion nut.