2003 Gmc Yukon Slt Sport Utility 4-door 5.3l 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!"

Hummer EV SUV official range announced: 3X truck tops 350 miles

The first run of GMC Hummer EVs were in one single specification: pickup truck in Edition 1 with all the off-road goodies. The most pertinent of those off-road upgrades to electric range being the 18-inch wheels with mud-terrain tires. And it was rated for 329 miles. But now, there are more Hummer variants. The pickup truck is now available with a 3X trim that comes standard with more efficient all-terrain tires wrapped around 22-inch wheels, and there's the SUV with both trims and both types of tires, not to mention a smaller battery pack. And now we have the official range estimates for them. We'll start with the Hummer EV SUV, since all of the official range ratings are new to us. The tires are the key factor, with the all-terrain equipped Edition 1 and 3X both managing 314 miles of range. Yes, this is less than even the mud-terrain-equipped truck, but that's mainly because the shorter length of the SUV means it has fewer battery cells and capacity. It has about 170 kWh of capacity versus the truck's 200+. Adding the Extreme Off-Road Package and its more aggressive tires drops range to 298 miles. The Four-Wheel-Steer system lets the 2022 GMC HUMMER EV Pickup m View 17 Photos As with the SUVs, the Hummer EV truck gets a solid range boost to 355 miles when it's not equipped with the off-road package. There's another benefit to the regular all-terrains on the Hummer EV truck: towing capacity. At 8,500 pounds, it can tow an extra 1,000 pounds over the models with the off-road package. GMC also notes that another potential benefit to the all-terrain-equipped trucks is a suspension tuned for better on-road handling. And our experience has shown that even Hummer with the off-road package isn't too shabby on pavement. Of course, skipping the off-road package will also save you some money, as will opting for the 3X trims. So unless you're really going off-road seriously, and would make regular use of the extra skid plates, under-truck camera and chunky tires, the standard suspension and tire setup really is the way to go. Related video:

GM mulling off-road variants of fullsize SUVs

According to General Motors, owners "just love off-roading with [its fullsize body-on-frame sport utility vehicles]," namely the 2015 Chevrolet Tahoe and Suburban and GMC Yukon. If that's the case, it's a bit odd that sales of the previous generation of these models with the Z71 off-road package didn't sell particularly well.
Perhaps, considering this disconnect between owner's thoughts and desires with actual sales, it's not surprising that General Motors is reportedly "considering" an off-road specific model. That means the package would include styling changes and badges along with suspension modifications and larger wheels with appropriately sized fender flares.
There's no indication if the off-road model would be called Z71 or when it may potentially go on sale, assuming it ever goes on sale at all.