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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!"

GMC talking to dealers about possible Jeep Wrangler competitors

With respect to the team at GMC, it's pretty much fair to say the manufacturer prospers on a lineup of nothing more than gussied up Chevrolets. The brand's successes aside, GMC can be boiled down thusly – the Sierra is a Silverado, the Terrain an Equinox, the Canyon a Colorado and the Acadia is a Traverse, albeit with sometimes dressier duds. Strictly speaking, it's not that simple – Acadia and Terrain have siblings beyond the Bowtie – but the brand is remarkable for its lack of distinctive models. That could change, though, as The Wall Street Journal is claiming General Motors has broached the idea of a building a GMC-badged competitor to the Jeep Wrangler during a meeting with dealers. WSJ claims the new off-roader would "borrow cues and capability" from the defunct Hummer brand. That, of course, could mean many, many different things. While the original Hummer, the H1, was an exceptionally capable vehicle off-road, the H2 and H3 weren't nearly as single minded. It's unclear if a Hummer-inspired, off-road-ready GMC would lean more towards the former than the latter. According to WSJ's report, the GMC Jeep appears to be in the very, very early planning stages, with one unnamed source saying the idea was "being kicked around real hard." GM is still courting dealers for feedback, while it refused the Journal's request for comment. What are your thoughts? Is a Wrangler competitor long overdue for GM? Do you think GMC is the best brand to introduce such a model? Have your say in Comments. Related Video: Featured Gallery 2013 Jeep Wrangler Unlimited Rubicon 4X4 View 12 Photos News Source: The Wall Street JournalImage Credit: Copyright 2015 AOL GM GMC SUV Off-Road Vehicles

GM claims it's first to sell million 30+ mpg vehicles

As we continue to put together all the data for the year-end edition of By The Numbers, General Motors has announced that it sold more than a million vehicles in the US last year that achieved at least 30 miles per gallon on the highway. More impressively, GM managed this feat using multiple strategies including small vehicle size, turbocharged engines and hybrid or plug-in technologies across four brands (Buick, Cadillac, Chevrolet and GMC) accounting for 13 separate models. This number will grow even more in 2013 thanks to cars like the all-electric Spark, the diesel Cruze, the range-extended Cadillac ELR and the Buick Encore compact CUV.
GM's small car sales were up 39 percent last year helping to attain this million-sales mark for 30-mpg models, and almost 40 percent of all GM sales consisted of cars with fuel-efficient I4 engines. In regards to more advanced means of improving fuel economy, GM says that it plans on having 500,000 vehicles with "some form of electrification" on the road by 2017.
Scroll down for the full list of GM's million 30+ mpg cars as well as an informative press release.