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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

General Motors and EVs: No stranger to firsts, but where's the leadership?

2015 is already shaping up to be the year of "affordable, 200-mile EV" concepts. Nissan and Tesla have each been talking about them for some time, the latter promising to unveil its Model 3 at the North American International Auto Show in January before balking when the time came. Instead, Chevrolet beat them all by unveiling the Bolt concept at the same event, followed shortly thereafter with suggestions of a 2016 launch – potentially offering the first nationwide EV with anything close to that range. It was the ballsiest EV-related move General Motors has made in a quarter century. But will it remain so? Exactly 25 years before the Bolt rolled up onto the turntable, then-Chairman Roger Smith unveiled GM's last ground-up EV concept, the even-more-unfortunately-named Impact, at the Los Angeles Auto Show in January 1990. A few months later, he surprised most of his colleagues by announcing its intended production in honor of Earth Day. It was the first modern foray into electric vehicles for the US by any automaker, one that was rewarded by the State of California with what is now known as the Zero Emissions Vehicle mandate. The program not only forced other automakers into competing with Roger's pet project, but inspired all of them to fight it like small children against bedtime. Some years later, the drivers themselves weighed in, with a biting documentary about that obstinance and the leadership it cost both GM and the country. Within months, GM was first back into the fray of plug-in vehicles. Many criticized the company for starting with a PHEV rather than jump straight back into EVs. The choice wasn't totally out of the blue – even EV1 was meant to be followed by a PHEV. And especially on the heels of Who Killed the Electric Car?, some skittishness was understandable: even a successful EV would invite a "we told you so" public reaction, underscoring their mistake in ending the EV1 program. If a new EV didn't do well, they'd be convicted in the public eye as serial killers. All while seeking a federal bailout. For all the flak, the resulting Chevy Volt was and is a better car than GM has ever gotten credit for. But the company seemed to grow weary of having to overcome its varied past, and while the current owners remain happy, much of the stakeholder and community engagement that so effectively built early goodwill and sales growth faded not long after launch. Marketing has been spotty in both consistency and effectiveness.

GM 6.2L V8 claims most powerful light-duty truck engine title

General Motors has officially captured the horsepower crown for mainstream pickup trucks with its 6.2-liter V8. The big mill, available in both the Chevrolet Silverado and GMC Sierra, comes to market with 420 horsepower and 460 pound-feet of torque, handily outdoing its two cross-town competitors, Ram (5.7-liter V8, 395 ponies and 407 lb-ft) and Ford (6.2-liter V8, 411 hp and 434 lb-ft).
The new GM 6.2 will take a bit of an investment, though. Those that want the extra thrust will need to go with either the LTZ or High Country trims from the Chevy, or the SLT and Denali trims from GMC, which are the two highest trim levels for the respective vehicles. Trim levels aside, if you're in the business of towing, GM has you covered. Optioned with the 6.2-liter V8 and the Max Trailering Package, owners will be able to pull 12,000 pounds, a hugely impressive figure.
We still aren't certain as to what sort of economy the new engine will get, but it'll probably be a bad bet for the fuel conscious. As for availability, expect to see the 6.2-liter trucks in showrooms later in the fall.