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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!"

2023 GMC Sierra HD MSRP up at least $1,000

Once Chevrolet bumped up the 2023 Silverado and Silverado HD MSRPs by $1,000, there was no reason to think luxury cousin GMC wouldn't do the same. The proof is here, pricing for the 2023 GMC Sierra HD up on its configurator with premiums of at least $1,000 over 2022 models. As we mentioned of the Silverado, the Sierras have also tracked with the price increases we mentioned in reference to the Chevrolets; the 2022 Sierra 1500 has run up $4,700 over its cost last October, the 2022 Sierra HD is $4,100 more than it was when it hit lots last summer. That puts a 2023 Sierra HD 2500 Regular Cab long bed with two-wheel drive and the 6.6-liter V8 gas engine at a starting price of $42,995 after the $1,795 destination charge, $1,000 beyond the 2022 pickup. At the top, a Crew Cab long bed Denali with four-wheel drive and the 6.6-liter Duramax V8 starts at $83,845, which is $1,250 more than the same rig from the 2022 model year. Moving up a weight class to the Sierra 3500, the price of entry starts $1,000 more than before at $44,195. The big bad boy 3500 Denali 4WD dually starts $1,200 more than before, at $86,245. The situation's a bit cloudier when we step down two classes to the 1500. GM Authority got the price sheet for the 2023 Sierra 1500 and reports that prices are up $1,000 on most trims, but $900 up on the Denali Ultimate and $1,900 up on the AT4. GMC hasn't uploaded the configurator for the 2023 trucks yet, and GMA's price sheet is hard to parse against prices on the 2022 configurator because the end of the model year and supply chain issues have translated into mandatory discounts that can't be accounted for. For instance, the 2022 Sierra 1500 Regular Cab standard box in entry-level Pro trim has an MSRP of $40,000, yet the configurator shows the total vehicle and options price as $39,950. After the $1,795 destination charge, that comes to $41,745. Then there's a mandatory package discount of $1,500, taking the final price before any other fees to $40,245. Meanwhile, GMA's paperwork shows the 2023 price starting at $40,020 after destination, which isn't $1,000 more than any figure on the configurator. At the top end, the 2022 Denali with the Crew Cab, standard box, 4WD, and 6.2-liter V8 comes out to $71,695, only because the front and rear park assist and steering column lock aren't fitted, resulting in a $100 discount.

2021 GMC Yukon configurator now open for play-money builds

The 2021 GMC Yukon configurator is open for real and imaginary business. It's missing a number of important options, though, like the AT4 trim and the Premium Capability Package that installs the Air Ride Adaptive Suspension, so the configurator is best suited for practice runs at the moment. Playing our usual game, we started with a livery build in base SLT 2WD trim for an airport shuttle to compare to the livery 2021 Tahoe we built a few days ago. Same as with the Chevy, the GMC offers nine exterior colors. Opposite to the Chevy, the GMC makes you pay for every color except Summit White. Our Onyx Black selection added $195, five colors cost $495, Cayenne Red Tintcoat costs $695, and the super gonzo White Frost Tricoat runs $1,095. We plumped for the SLT Luxury package's driver assistance and convenience features like memory settings for the front passengers, powered seating for the second row, a split third row, the Rear Seat Media Package, and a console lockbox. What began as $59,095 after destination — $4,000 more than the 2021 Tahoe — ended at $64,445, just $2,165 more than our livery Tahoe because the Yukon packages more kit.   The amounts add up a lot quicker at the top end. Our regional rep with a fat bonus check started with a $72,295 Yukon Denali 4WD in the $495 Pearl Beige Metallic with a Teak and Light Shade interior. The $6,500 Denali Premium Package normally costs $500 more, and who can resist a sale? At about 9% of MSRP, it's not a negligible option, but it includes the $1,780 Advanced Technology Package, the $1,500 panoramic sunroof, and a set of 22-inch wheels that are normally $2,995. Since the bonus was big enough to replace the two-year-old jet skis in the garage, our rep added the $465 Max Trailering Package and that automatically appends the ProGrade Trailering features. Put in the Rear Seat Media Package to occupy the kids, locking armrest storage to protect stuff from the kids, and hook up a set of illuminated GMC badges for $535 to wow oncoming vehicles, and the total comes to $83,320. That's more than $10,000 in options without the least effort. However, there aren't any big-money options left to add except a $1,499 rooftop tent.     GM Authority wrote about the package combinations necessary to unlock the Air Ride Adaptive Suspension on the AT4 or Denali trims. Summed up, the check boxes add $3,410 to the price of an AT4, $3,755 to the price of a 2WD Denali, and $6,015 to the price of a 4WD Denali.