2013 Dodge Viper Gts on 2040-cars

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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!"

121k Dodge Darts being investigated over braking problem

The National Highway Traffic Safety Administration is investigating the Dodge Dart due to reports of braking problems. Some 121,000 cars are possibly affected, all from the 2013 model year. According to The Detroit News, NHTSA received 18 complaints about the brake pedal becoming hard to depress on these cars, increasing stopping distance. Drivers reported hearing a "pop noise or an air hissing noise when applying the brake pedal, followed by a hard pedal feel and reduced brake effectiveness," NHTSA told the News. In a particularly terrifying incident, one driver says the Dart's braking system shut down while driving at 50 miles per hour. "I feared for my life. It is one of the scariest things I have ever dealt with," the complaint said, according to The Detroit News. A Fiat-Chrysler spokesperson said the automaker is "fully cooperating" with this investigation.

Challenger A/T Unlimited Concept could be your next Hellcat-powered ORV

This past June I spent an excellent day hanging out with Joey Ruiter, driving and discussing his Reboot Buggy project. Before heading home, I let him know that he was more than welcome to keep me abreast of whichever new automotive project he'd get into. You can never have too many car designers and one-off fabricators in your Rolodex, right?
Ruiter recently made good with the follow-up, emailing me with details on this Dodge Challenger A/T Untamed Concept that pushes a lot of hot buttons for the muscle car and off-roading enthusiasts.
This all-terrain Mopar is a lot more than a Challenger body dropped on a truck chassis, too. A materialized version of the A/T would included a completely new, long-travel suspension, skid plates, body armor and rock sliders, and obviously flared fenders to help accommodate a hellacious set of off-road-ready tires. The dramatically revised underpinnings would be topped with a slick graphics package and a killer lower light bar, all making the A/T look quite cohesive in its own, radical way. And the result would be a car no longer limited to mere road-driving.