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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!"

GM issues stop-sale for 3 SUVs over incorrect MPG rating

This week, GM sent a memo to Chevy, GMC, and Buick dealers to tell them to stop selling three SUVS. The 2016 Chevy Traverse, the GMC Acadia, and the Buick Enclave all have EPA window stickers that show higher fuel economy ratings than the vehicles actually have. Unlike other recent – and very public – fuel economy ratings problems from VW and Mitsubishi, it doesn't seem like GM did anything wrong with the testing for these vehicles, it just misprinted the labels. New labels are being printed and should arrive at dealerships this weekend and early next week. After that, the SUVs will be able to be sold and delivered again. The official fuel economy rating for the three SUVs are all the same. The correct numbers for the all-wheel drive versions are 17 miles per gallon combined, 15 city, and 22 highway. The stickers say the SUVs get 17/24/19. The front-wheel driver models were also incorrectly labeled, and the total number of affected vehicles is 59,823. In the memo, GM said the problem was caused by an "inadvertent error," Automotive News says. GM is working with the EPA to solve the issue. We have asked GM for a comment on the mistake and will update this post if we hear back. Related Gallery 2013 GMC Acadia View 16 Photos News Source: Automotive News – sub. req. Government/Legal Green Buick Chevrolet GM GMC Fuel Efficiency mpg gmc acadia chevy traverse

Barrett-Jackson rundown: 2024 GMC Hummer EV, Colin Powell's Corvette and more

The echoes of the last hammer fall at Barrett-Jackson's Scottsdale Auction have disappeared into the Arizona night, as have the record crowds and the traffic jams. During the Super Saturday charity auctions, three main attractions drove onto the dais for bidding: Late U.S. Chairman of the Joint Chiefs of Staff and Secretary of State General Colin Powell’s 2015 Chevrolet Corvette Stingray, the hammer price benefitting AmericaÂ’s Promise Alliance, the nonprofit Powell founded to support kids; The first production 2024 GMC Hummer EV SUV Edition 1 with VIN 001, proceeds going to Tread Lightly!, which educates people on how to enjoy the outdoors in a motorized vehicle and simultaneously protect the outdoors; And the first production 2024 Ford Mustang GT Fastback VIN 001, its hammer price benefiting the Juvenile Diabetes Research Foundation. Before the Saturday showcase, charity auctions on Friday took Barrett-Jackson past a huge milestone. When an 800-horsepower 2021 Shelby Super Snake Count's Kustoms Edition hammered for $350,000 to support the veteran's charity Camp Freedom, the auction house officially surpassed the $150 million mark for charity auction proceeds. Piling on before the clock struck midnight, a 2023 Ford F-150 Lightning 4x4 Super Crew sold for $275,000, those funds donated to Fighter Country Foundation. Then came Saturday. Powell's Gunmetal Gray on black Stingray was said to be a daily driver, but with just 15,600 miles on the odometer, Powell — who died in 2021 — apparently had a very short commute. Equipped with an eight-speed automatic transmission and chrome wheels, it sold for $200,000. The first production 2024 GMC Hummer EV SUV Edition 1 ran the bidding up to $500,000. That's quite a ways down on the $2,500,000 that the bedded 2022 GMC Hummer EV Edition 1 garnered at the charity auction in 2021, and not a bad price all things considered. The owner gets the first one off the line instead of getting lost in the 90,000-order backlog, and the markup goes to a good cause instead of a flipper and eBay fees. The first production 2024 Mustang GT Fastback brought in both less and more than the Hummer EV. The Ford's hammer price came to $490,000. However, two additional philanthropic donations for this lot in the amounts of $50,000 and $25,000 took the final price to $565,000. The big movers on the day were outside the charity sphere, four cars breaking the million-dollar mark.