2014 Gmc Denali Sierra 1500 4x4 6.2 L Sunroof 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!"

New GM subcompact SUV spied, could be a Chevy or GMC

GM's pair of subcompact crossovers have been trundling along for a while now. The Buick Encore was the first for Americans in the 2013 model year, and the Chevy Trax that was based on the Encore (an encore of the Encore, if you will) arrived for the 2015 model year. Each has undergone a mild update, but these spy photos could indicate their replacements are in the works. Or not. For starters, we can't be sure which GM brand this new SUV is destined for. Though the timing and its flowing lines could indicate Buick, the thick horizontal bars visible in the grille would indicate otherwise. The next Encore being at least related to this is at least a possibility. Making the case for GMC are those thick grille bars, the fact that it extends far below the lights, and may even rise above them, similar to the Acadia. And that rising beltline isn't that different from that of the Acadia. Arguing against the GMC idea is the Encore, which is almost always sold in GMC-Buick combo dealers. Much as the Acadia was made smaller to eliminate confusion and in-house competition with the Enclave, it's hard to see GM opting to resurrect such an issue at the bottom end of the SUV market. That means we're leaning toward this little SUV wearing a Chevy bowtie. The split grille with a large lower section and small upper section is the brand's current design language, as seen on the new Malibus and Cruzes. The shape is vaguely Equinox-like. And like Buick, Chevy also has a subcompact crossover ready for replacement: the Trax. Now, our photographer reports he's seen another subcompact testing that has Blazer design cues, but in this crossover-hungry market, we wouldn't be surprised if two similarly sized but differently styled Chevy crossovers make the grade. It's a strategy that's working pretty well for Jeep. We'll no doubt be seeing more of these disguised test vehicles milling about the country in the coming months, so perhaps we'll eventually get a better idea of what this is before more official information starts trickling out within one or two years. Related Video: Featured Gallery GM Subcompact Crossover spy shots View 10 Photos Image Credit: SpiedBilde Spy Photos Buick Chevrolet GM GMC Crossover SUV buick encore chevy trax

GM CEO Barra says 'we are selling every truck we can build'

DETROIT — General Motors Chief Executive Mary Barra said on Monday the automaker is "selling every truck we can build" and expanding North American truck-building capacity, even as U.S. gasoline prices hit record highs. Barra made her comments during the automaker's annual shareholder meeting. GM is pursuing a two-track strategy: Investing heavily in electric vehicles for North America, China and other markets, and funding those investments by trying to maximize profits from its North American combustion pickup truck and large SUV lineups. Barra said GM is planning higher-priced versions of its Silverado large pickup and its large SUV models. GM and its Detroit rivals Ford Motor Co and Stellantis NV rely heavily on sales of large pickup trucks and SUVs for global profits. High U.S. gasoline prices in the past have undermined consumer demand for relatively inefficient models. Nominal pump prices hit an average of above $5 a gallon for the first time ever last week, the federal government said Friday. GM is ramping up production of EVs. Barra said the Cadillac Lyriq electric sport utility is sold out through 2023. In response to shareholder questions, Barra said the "clear priority" for using cash generated by its operations is to "accelerate our EV plans." She did not rule out share buybacks or other approaches to returning cash to shareholders. GM still expects to increase production this year by 25-30%, despite continuing pressure on semiconductor supplies globally. Barra said GM is working to redesign vehicles to reduce the number of processors required by 95%. Barra serves as GM's board chair and CEO. GM shareholders overwhelmingly rejected a proposal to separate those roles.