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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.

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!"

2016 Dodge Viper ACR priced from $117,895

Fancy getting your hands on the all-new Dodge Viper ACR? Prepare to shell out at least $117,895, not counting destination or gas-guzzler tax. Those two add $1,995 and $2,100, respectively, for an out-the-door price of $121,990. That's $32,900 more than a base 2015 Viper, or the equivalent of a Challenger with a few options. As we explained previously, the ACR model doesn't do much for outright power – the 8.4-liter V10 offers up only five more ponies than before – but it does add suspension and aerodynamic upgrades that make this particular Viper far more potent on the track. The order books are officially open for the ACR, so if you've got the coin, get in touch with your local dealer. Until then, head into Comments and let us know what you think of the ACR's pricing. Would you shell out $118,000 for the ultimate Viper? DODGE OPENS ORDER BANKS FOR NEW 2016 DODGE VIPER ACR The fastest street-legal Viper track car ever offers a tremendous value for performance May 12, 2015 , Auburn Hills, Mich. - Viper enthusiasts with the need for ultimate handling, performance and road course domination, as well as the ability to drive their Viper home from the track, can now place their orders for the fastest street-legal Viper track car ever. The Dodge brand has announced pricing and opened order banks for the recently introduced 2016 Dodge Viper ACR. Unveiled last week at the revamped Conner Avenue Assembly Plant in Detroit, the American Club Racer model of the iconic, hand-built American supercar will have a starting U.S. Manufacturer's Suggested Retail Price (MSRP) of $117,895 (excluding destination and gas guzzler tax). "Bringing our street-legal Dodge Viper ACR back is going to arm our track enthusiasts with the ultimate weapon to dominate road courses across the country," said Tim Kuniskis, President and CEO - Dodge and SRT Brands, FCA - North America. "This is without a doubt the best Viper ACR ever. The latest in aerodynamic, braking and tire technology will ensure its legendary performance reputation around the world." Originally introduced in 1999 and last available for the 2010 model year, the Viper ACR has a long-standing legacy as the ultimate street-legal track car for club racing. The new 2016 model honors that performance legacy with significant aerodynamic and suspension upgrades, new Carbon Ceramic brakes with six-piston calipers and high-performance tires specifically designed for ACR.