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GM takes 2020 full-size pickup sales crown

It's no secret that 2020 was an unconventional year for auto sales. Extenuating circumstances or not, it was a year of upheaval even for ever-resilient (and ever-profitable) pickups, with General Motors taking the crown from Ford in the full-size segment.  The Ford F-Series still outsold every other full-size pickup nameplate in the country by a significant margin. It's only when you combine GM's Chevrolet Silverado and GMC Sierra variants that you get a number that exceeds Ford's. This isn't really a new phenomenon, either. In fact, it was only somewhat recently that Ford took the overall full-size crown away from GM, and not only did Ford widen the gap in recent years, but Ram has once again become a legitimate challenger, even managing to outsell the Silverado by a healthy margin in 2019, but never coming close to the F-Series in terms of total volume.  But, 2020 being 2020, things got weird yet again. Ram remains relevant, of course, but Ford got caught with its pants down thanks to the one-two punch of COVID and the generational changeover of the core F-150 model, which resulted in a production interruption as the company's assembly facilities transitioned from building the old 2020 model to the new-for-2021. This perfect storm, as it turns out, was sufficient for GM to walk away with the full-size crown. See for yourself: Full-size 2020 pickup sales: GM total: 847,110 F-Series: 787,422 Silverado: 594,094 Ram: 563,676 Sierra: 253,016 Tundra: 109,203 Titan: 26,439 As you can see, Ram slipped back behind Silverado, slotting comfortably into third place. The Silverado 1500 had a flat year, but the heavy- and medium-duty variants bucked the trend and contributed to a slight uptick in sales for the nameplate, while F-Series tumbled more than 12% (nearly 110,000 units), opening the door for GM to steam ahead.  There were similarly significant shakeups in the midsize truck segment. First, 2020 was the first full year of retail sales for the Gladiator pickup, which surged to fourth place behind the stalwart Tacoma, Ranger and Colorado. GM's combined sales of the Colorado and Canyon are good enough for second place by manufacturer, but nowhere close to what it would take to dethrone Toyota.

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 patent reveals new two-stage turbocharger

Modern turbochargers may be some of the best ever made, but performance is something that engineers are always trying to improve. According to GM Inside News, General Motors (GM) is hoping to alleviate some of the negative aspects of a two-stage turbocharger setup with a newly-patented design. The patent, that was filed on May 19, 2016, reveals a clever bypass system that allows the engine, a four-cylinder unit, to optimize both the low-pressure and high-pressure inlets for its respective functions. According to the filing, a conventional two-stage turbocharger setup is engineered to allow both turbines to operate simultaneously at low and mid engine speeds. At high engine speeds, only the low-pressure turbine works. The setup can't isolate either the low or high pressure side, which can impair low-end performance. GM's new two-stage turbocharger setup looks to eliminate this by linking the high-pressure turbo to the exhaust manifold through the high-pressure inlet duct. The low-pressure turbo is attached to the high-pressure turbo by a low-pressure inlet duct, which is linked to a connecting channel. A single actuator that is housed in the exhaust manifold creates a bypass that can opens the high-pressure inlet or close the connecting channel. Depending on what the engine load and speed is, the ECU guides the actuator—a single rotating spindle with discs corresponding to flanges on the high and low pressure sides—to isolate one of the two turbos. Isolating the turbos allow the respective inlets to be engineered for the best possible fluid dynamic performance. The setup should increase performance and decrease lag. There's no word on what car this setup will make an appearance on, but it will most likely be used in premium vehicles before trickling down to the rest of GM's vehicles. Related Video: News Source: GM Inside News, AutoGuide via GM Authority Cadillac Chevrolet GM Technology Sedan turbo patent engine turbocharging