2009 Dodge Grand Caravan Sxt Mini Passenger Van 4-door 4.0l 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!"

MotorWeek remembers a better time for Mitsubishi performance

Dodge still knows how to create an capable performance car – look at the Hellcats, for example – but the same isn't true for Mitsubishi. With the Lancer Evo's demise, we don't expect driving enthusiasts to clamor for any of the Japanese automaker's other products. Things used to be different, though. As MotorWeek found in its new Retro Review, the 1991 Mitsubishi 3000GT VR4 and its sibling, the Dodge Stealth R/T Turbo, were impressive sports coupes in their day. Dodge and Mitsubishi packed a bevy of cutting-edge tech into the coupes. In these trims, both sported all-wheel drive, four-wheel steering, an adjustable suspension, active exhaust, and automatic climate control. The 3000GT VR4 upped the ante even more with active aero parts at the front and rear. Their 3.0-liter twin-turbo V6 was good for 300 horsepower and 307 pound-feet, which were good numbers at the time. This pair put all their gizmos to good use, too. MotorWeek compares the all-wheel-drive system's grip levels to a Porsche 911 Carrera 4. When was the last time you heard any favorable similarity between a Mitsubishi and a Porsche? The Stealth R/T Turbo and 3000GT VR4 came from a special time for Japanese sports coupes, when every brand had a halo model. Whether you were looking at Nissan 300ZX, Mazda RX-7, Toyota Supra, or even the Acura NSX, there was a lot to like on the market. MotorWeek's latest Retro Review offers a great reminder of that period.

Will airbags sandbag the 2017 Dodge Viper?

The Dodge Viper is speeding down the road to cancellation for the 2017 model year, and at least part of the reason for the V10 monster's death is a problem fitting it with federally mandated side curtain airbags. An anonymous source close to FCA US told Motor Trend the automaker can't install the parts because they would further limit the coupe's already tight headroom. The government believes the side curtain airbags can reduce occupant ejections during accidents, and all vehicles must have them for the 2017 model year. The Viper's slow sales also don't provide FCA US much motivation to work out a solution to this problem. The automaker moved just 676 of the handmade sports coupes in the US in 2015, which was down 11 percent from 760 deliveries in 2014. FCA CEO Sergio Marchionne hinted at the Detroit Auto Show that the Viper could return eventually. He doesn't like that the current model has a dedicated platform but indicated a new one could share the underpinnings with another of the company's products. Marchionne's current business plan for FCA stresses building the automaker's value, so it might be a while before we see the sweater-clad CEO focusing on a niche vehicle like the Viper. Related Video: