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GM Design shows what could have been and what might be

We periodically like to check in with GM Design's Instagram account to see what they're cooking up. Even better is when we catch a glimpse of an alternate history of what legendary designers from The General's past were thinking, though those ideas may not have made it into production. This week, for example, the account posted some illustrations from George Camp, whose career at GM spanned nearly four decades, from 1963 to 2001. One of the renderings is of what appears to be a 1971-72 Pontiac GTO Judge, but with two headlights instead of the production unit's quad beams. The rear departs from the canonical version most dramatically, with a massive integrated wing. Other bits that didn't make the production cut include large side vents, a gill-like side marker and rectangular intakes below the headlights that wouldn't be out of place on a modern design today. Amazingly, from what we can make out of the date, it appears that the drawing was done sometime in 1965, which makes it quite prescient.           View this post on Instagram                       A post shared by GM Design (@generalmotorsdesign) There's also a very aerodynamic interpretation of a Corvette ZR-1. To our eyes it splits the difference between the 1986 Corvette Indy concept and a fourth-generation F-body Pontiac Firebird, so perhaps parts of Camp's work on this sketch did make it into physical form. There's also a radical sports car concept from May 1970 that resembles the Mazda RX-500 concept from the same year, a Syd Mead-looking Cadillac coupe, and an Oldsmobile with a cool take on the company's trademark waterfall grille and elements of the Colonnade Cutlass at the rear. Other recent posts include a FJ Cruiser-like off-road EV, a sleek coupe with the Chevy corporate grille, and a rendering of a Silverado-esque pickup that looks far better than the current production version.           View this post on Instagram                       A post shared by GM Design (@generalmotorsdesign) It's pretty easy to lose hours in the account, but it's always fascinating to see GM's visions of what could have been and what might be. Related Video:

Junkyard Gem: 1987 Chevrolet Turbo Sprint

Fifteen years ago, I wrote my first-ever automotive article under the name Murilee Martin, and it didn't take me long to start writing about one of my favorite automotive subjects: the junkyard. Before I'd refined my system for documenting discarded vehicles, however, I shot a lot of boneyard photos that never got used. For today's Junkyard Gem, I have four shots from early 2007 of one of the rarest turbocharged machines of the 1980s: the Chevrolet Turbo Sprint. The Chevrolet Sprint was really a rebadged Suzuki Cultus, from the pre-Geo era when General Motors sold the Isuzu Gemini as the Chevrolet Spectrum, the Daewoo LeMans as the Pontiac LeMans and the Toyota Corolla as the Chevrolet Nova (soon enough, the Spectrum became a Geo, and the Nova became the Prizm). The second-generation Cultus appeared in 1988, becoming the Geo Metro on our shores the following year. The Turbo Sprint was available for just the last two years of the Sprint's 1985-1988 American sales run, and it appears that just a couple of thousand were sold; if I'd known at the time just how rare they were, I'd have shot more photos of this one at the now-defunct Hayward Pick Your Part. The turbocharged 993cc three-cylinder produced 70 horsepower, 22 better than the naturally-aspirated version. Since the Turbo Sprint weighed just 1,620 pounds (that's about 500 pounds lighter than a barely more powerful '22 Mitsusbishi Mirage), it was plenty of fun to drive. For 1988, the regular Sprint hatchback cost $6,380 while the Turbo Sprint listed at $8,240 (that's about $15,375 and $19,855 today, respectively). Believe it or not, a Turbo Sprint actually raced in the 24 Hours of Lemons 10 years ago, though it didn't end well. This ad is for the regular Cultus, not the Cultus Turbo, but the screaming guitars sound reasonably turbocharged. For the most part, Chevy Sprint marketing was all about cheap purchase price and stingy fuel economy… at a time when gasoline prices were cratering. Related Video:

Leak reveals GM's 2017 heavy duty diesel trucks to get 910 lb-ft of torque [UPDATE]

UPDATE: Chevrolet officially announced specs for the 2017 Silverado HD and the rumors were true. The truck's new Duramax 6.6-liter turbo-diesel V8 puts out 445 horsepower and 910 pound-feet of torque. Chevrolet says the new motor produces 19 percent more torque and 12 percent more horsepower, while producing 35 percent fewer emissions. Overall, the new engine is a big improvement over the current motor, which generates 397 horsepower and 765 pound-feet of torque. According to Truck Trend, GM's newest heavy duty pickup trucks will pick up quite a bit more power and torque. The publication spotted a recent GM Powertrain ordering catalog that had the engine specs for the 2017 model year and managed to get some screenshots before the catalog was taken down, and they can be viewed here. The screenshots revealed that the 6.6-liter turbodiesel V8 powering the Silverado and Sierra heavy duty models will boast 445 horsepower and 910 lb-ft of torque. This is a substantial gain over the current models' 397 horsepower and 765 lb-ft of torque, and as Truck Trend points out, it exceeds the Ford Super Duty line's horsepower output of 440, but comes short of the 925 lb-ft rating. Truck Trend credits part of this output gain to the new intake system GM will introduce on the 2017 heavy duties. The intake gets 60 percent of its air from a scoop on the hood, with the other 40 percent coming from behind one of the front fenders. GM doesn't reveal horsepower figures in the press release about the scoop, but it does say the cooler air helps with maintaining the engine's output, and that the scoop does produce a ram-air affect, providing more air at speed. As we know, more air plus more fuel equals more power, but there's likely more to the power increase in this engine than only the intake. Related Video: News Source: Truck Trend via MSN Chevrolet GM GMC Truck Diesel Vehicles