2007 Srw Slt Crew 4x4 Leather Heated Trailer Hitch Duramax Diesel 217k Miles 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!"

Even if GM does close all 5 of those plants, it'll still have too many

DETROIT — General Motors' monumental announcement on Monday that it will close three car assembly plants and two powertrain plants in North America and slash its workforce will only partially close the gap between capacity and demand for the automaker's sedans, according to a Reuters analysis of industry production and capacity data. Sales of traditional passenger cars in North America have been declining for the past six years and are still withering. After GM ends production next year at factories in Michigan, Ohio and Ontario, it will still have four U.S. passenger-car plants — all operating at less than 50 percent of rated capacity, according to figures supplied by LMC Automotive. In comparison, Detroit-based rivals Ford and Fiat Chrysler Automobiles will have one car plant each in North America after 2019. The Detroit Three are facing rapidly dwindling demand for traditional passenger cars from U.S. consumers, many of whom have shifted to crossovers and trucks. Passenger cars accounted for 48 percent of retail light-vehicle sales in the United States in 2014, according to market researchers at J.D. Power and Associates. This year, sedans will account for less than a third of light vehicle sales. That shift in turn has left most North American car plants operating far below their rated capacities, while many SUV and truck plants are running on overtime. The collapse in passenger-car demand is a challenge for nearly all automakers in the United States, including Japan's Toyota and Honda, which have the top-selling models in the compact and midsize car segments. Toyota executives said last month they are evaluating the company's U.S. model lineup. But Toyota also plans to build compact Corolla sedans at a new $1.6 billion factory it is building in Alabama with partner Mazda. The obstacles facing GM in its plans to close more auto factories became apparent on Tuesday as U.S. President Donald Trump threatened to block payment of government electric vehicle subsidies to GM. While it is not certain that Trump unilaterally has the power to do that, he made it clear he intends to use his office to pressure the company to keep open a small car plant in Ohio that GM says will stop building vehicles in March.

2019 GMC Sierra Denali MultiPro tailgate and CarbonPro bed explained

When the 2019 Chevy Silverado debuted at the Detroit Auto Show in January, GM's Mark Reuss promised that the new 2019 GMC Sierra would have some significantly different styling and features than its corporate sibling. Previously, the Sierra has been little more than a Silverado with new front and rear fascias and some extra chrome inside and out. Well, Reuss was right. In addition to new sheetmetal, the Sierra exclusively gets the slick MultiPro tailgate and CarbonPro carbon-fiber bed box The tailgate really is trick. At the debut, GMC had multiple demonstrations, with engineers walking us through all six different configurations. Like all Sierra tailgates, the MultiPro version uses an aluminum skin to reduce weight. It's easy to tell which tailgate is which, as the MultiPro has a distinct cutout in the middle where it can fold down or extend. It can be used to extend the bed, drop to allow easier access, provide a sort of workbench, or be used as a step to help get into the bed. Yes, there's even a handle. Ford who? The step itself can support up to 375 pounds, 75 pounds more than Ford's similar tailgate step. This tailgate really is unique to the Sierra and is standard on SLT and Denali models. That said, the power-operated tailgate from the Silverado won't be coming to the GMC. Chevy gets its own exclusive, too. The Sierra's other big exclusive is the carbon-fiber reinforced plastic bed box. CFRP replaces steel inside the bed though not on the fenders. The bed uses four pieces; one for the bottom, one in the back and two along the sides. This isn't a CFRP. There is no steel hiding underneath these panels. Just take a peek underneath. The bed is a composite that uses 1-inch carbon-fiber threads, not a weave. Sheets of CFRP are molded and quenched — a process where the plastic coagulates and solidifies, locking in the carbon fiber — in just 60 seconds. That allows GMC's supplier to crank out these much more quickly. The finish looks like black fiberglass, though an engineer said that this wasn't the final production version. The final model will have different textures in order to improve grip and keep things from sliding around. GMC is touting the material's dent and corrosion resistance, though it remains to be seen how well it holds up to cracking. A video at the reveal showed people going after it with hammers and cinder blocks, but in-person demonstrations weren't available.