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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

Dodge Challenger SRT Hellcat vs. Chevrolet Camaro ZL1 in latest Head 2 Head

"Olympian" is one of the terms we use to signify the greatest height, the seat of the gods. Yet Mt. Olympus is the second-highest peak in the Balkans ranges, overshadowed by the crest at Musala in Bulgaria's Rila mountains. Both great heights, but one is a little higher. That's how we get the Olympian Chevy Camaro ZL1 pitched at the Musalic Dodge Challenger SRT Hellcat in Motor Trend's latest episode of Head 2 Head. The side-by-side spec sheet is filled with farcical numbers. For the ZL1, that's a 6.2-liter V8 with 580 horsepower, 556 pound-feet of torque, a 4,051-pound curb weight, 0-to-60 miles per hour in 3.9 seconds, a quarter-mile time of 12.2 seconds and a base price of just $57,800. Opposing that, the Hellcat wrings out its 6.2-liter V8 for 707 hp, 650 lb-ft of torque, weighs 4,449 pounds, does the quarter in 11.7 seconds and has a base price of just $60,990. Except in the case of the Hellcat, when Motor Trend put it on the dyno the machine spit out a reading of 672 hp and 606 lb-ft at the wheels. If there's a 10-percent driveline loss through those beefed-up internals and heavy-duty eight-speed transmission, that means the Hellcat is actually rated at about 750 horsepower and 700 lb-ft. But once they get put on a closed-off strip of coast road in Northern California, there are only a few strands of hair between their respective performances. That's not the case for they sensations provide; host Jonny Lieberman calls one of them, "One of the most incredible cars ever made," and says, "It changes everything." Watch the video above to see who got the verdict and how. Related Video:

Win an SUV 2022 | The best giveaways of the week

Autoblog may receive a share from purchases made via links on this page. Pricing and availability is subject to change. No donation or payment necessary to enter or win this sweepstakes. See official rules on Omaze. SUVs and crossovers are a hugely popular segment in the United States, making up nearly half of total vehicles sold last year. Here are our favorite SUV giveaways we’ve found online this week. Win a Himalaya Land Rover Defender 110 Crew Cab - Enter at Omaze The Land Rover Defender is an icon. An intense, luxurious off-roader that turns heads and can crawl up nearly anything. The problem? For the past 20+ years it hasn't been available in the United States. But this Defender is different. ItÂ’s vintage, restored by Himalaya, and itÂ’s powered by a Corvette engine. Plus Omaze is giving it away.  Here are the specs of the Defender in question, according to Omaze: Maximum Seating: 4 Engine: 6.2-liter Corvette LS3 crate engine Transmission: 6-speed automatic  Drivetrain: 4WD  Exterior Color: Satin Grey Interior Color: Jet Black Maximum Horsepower: 430 hp Maximum Torque: 425 lb-ft Approximate Retail Value: $210,000  Cash Alt: $157,500  Special Features: Black exterior roll bars and trim; Black 18” Sawtooth wheels with 35” tires; Wilwood™ brakes; 3" lift; Black diamond-stitched leather sport seats; MOMO Millenium steering wheel; front and rear matching consoles; Himalaya gauge cluster; Himalaya front and rear bumpers, bed-mounted tire carrier, and extended fender flares; Puma hood; LED lighting YouÂ’re probably asking yourself, what does it take to win? First of all, according to Omaze, "no donation or payment is necessary to enter or win this sweepstakes." $10 will get you 100 entries in this sweepstakes, while $50 will get you 1,000 entries and $100 will get you 2,000 entries. The best part? Each paid entry raises money for a worthy cause. See more about these causes at Omaze. Other Omaze sweepstakes: Win an Airstream Interstate 24X Win a 1958 Porsche 356 A - Enter at Omaze Win a Restored 1969 Pontiac GTO - Enter at Omaze Win a 2022 Porsche 911 GT3 - Enter at Omaze For these and more vehicle sweepstakes, check out Omaze.com. Enter quickly, they won't last forever. Bentley Chevrolet Ford Land Rover Commerce SUV