1996 Chevrolet Caprice Classic Sedan 4-door 4.3l on 2040-cars

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GM files for Z71 Trail Boss trademark

Try as they might to keep their plans a secret, automakers have their hands tipped through a variety of methods – be they through loose lips, spy shots or patent and trademark applications. That's how we know, in this instance, that General Motors is working on (or at least considering) an off-road machine wearing the name Z71 Trail Boss – the name which our compatriots at AutoGuide.com tell us that GM has registered for use on light-duty trucks. Now if that alphanumeric designator sounds familiar, it should. GM has long used it to designate the off-road packages on many of its body-on-frame trucks from Chevy and GMC. These days you can order a Z71 package on the Chevy Colorado, Silverado, Tahoe and Suburban and on the GMC Canyon, Sierra and Yukon. The package typically includes components like a beefed-up suspension bits, high-capacity air cleaner and underbody protection plates. The Trail Boss designator would seem to suggest something further reaching than a suspension package, though. Just what it would entail we don't know; minds immediately start running toward Chevy or GMC going after the Ford F-150 Raptor, but we'll likely be looking at something closer to the Trailhawk packages Jeep offers on the likes of the Renegade and Cherokee. Featured Gallery 2015 Chevrolet Tahoe Z71 View 16 Photos News Source: AutoGuide.comImage Credit: Chevrolet Chevrolet GM GMC Truck SUV Off-Road Vehicles patent trademark

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!"

A conversation with GM's Mark Reuss on MPG, aluminum and Corvettes

There was plenty to talk about when General Motors hosted its annual mid-December holiday media reception a few months ago. GM had just decided to pull its global Chevrolet brand out of major European markets, where Chevys have competed directly with GM Europe Opel and Vauxhall vehicles, and the US government had sold its last remaining shares of GM stock. But most important was the company's just-reshuffled leadership. Post-bankruptcy CEO Dan Akerson had announced that he would step aside and that 52-year-old Mary Barra would replace him on January 15. Not only would she be the first woman to lead a major automaker, she would also be GM's first engineer CEO since Bob Stempel in the early 1990s. "I look at 2013 and 2014, as the retooling of General Motors" - Mark Reuss Replacing her as executive VP for global product development (and purchasing and supply chain) would be 49-year-old Mark Reuss, who had served a stellar four years as North American president, and elevated to corporate president (from executive VP and CFO) would be 42-year-old Dan Amman. All three are relatively young auto enthusiasts who are liked and respected inside and outside the company, and their collective talents and experience are highly complementary. I've interviewed Barra and found her smart, personable and knowledgeable, though she carefully walks the corporate line in speaking and answering questions. I met and chatted with Ammann for the first time at that holiday reception, and he made a good first impression. But I've known Reuss for some time as a genuinely good guy and a highly capable and inspiring leader, and I believe he is exactly the right person for the global product responsibility once famously held by the outspoken, oft-controversial Bob Lutz. So I jumped at an opportunity to join a group interview of Reuss (with mostly business reporters) at the Detroit Auto Show in January. It was an interesting session of mostly good questions, which he answered with refreshing candor and humor. "I look at 2013 and 2014, as the retooling of General Motors," Reuss said. "We've taken down almost every plant in North America, converted and turned it this last year, and to do that with award-winning vehicles and pretty flawless launches is key. We have to keep the train rolling on great product, because the rest won't happen without the best product, period." A reporter asked whether GM was pushing big trucks, SUVs and Corvettes again because gas is cheap. "No," Reuss said.