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Chevy's 6.6-liter Duramax is pretty much all new

To say there's a heated battle in heavy-duty pickups is an understatement, with Chevrolet, Ford, and Ram constantly trading blows of increased torque, horsepower, and towing capacity. The latest salvo is the revised, more powerful turbo diesel 6.6-liter Duramax V8 in the 2017 Chevy Silverado. It has 910 pound-feet of torque, an increase of 145, putting it nearly level with the Ford Super Duty. Here's a closer look at where those gains come from. How exactly did Chevrolet add all that torque plus 48 horsepower? The automaker essentially took a fine-tooth comb to the entire engine. Chevy says it changed 90 percent of the V8, and the cumulative effect of those small changes adds up to big increases. As you might guess, the turbocharger is updated. The larger unit features electric actuation of the variable nozzle turbine (VNT), and what Chevy calls a double axle cartridge mechanism that separates the VNT moving parts from the housing. That helps with heat performance as well, with a claim that the exhaust side of the turbo can run continuously up to 1,436 degrees Fahrenheit. Helping that cause are six exhaust gaskets made of Inconel - an nickel alloy that contains chromium and iron – and upgraded stainless steel for the exhaust manifold. Despite having the same cast iron cylinder block, albeit with some minor enhancements, the engine has new cylinder heads, pistons, piston pins, connecting rods, and crankshaft, which have all been upgraded to handle 20 percent higher cylinder pressures. Alongside the increase in pressure, Chevrolet also increased the cylinder head's structure with a honeycomb design. The pattern features high-strength aluminum with dual layer water jackets that not only improve strength, but also optimize water flow for better cooling. For 2017, the cylinder head also benefits from integrated plenum that aids the engine in getting more air under heavy loads. The cylinder head isn't the only component to get a minor update, as the pistons have a larger diameter pin for improved oil flow. The same detailed improvements has been bestowed to the humble connecting rods (second in our hearts only to the inanimate carbon rod). The new design has the bolts oriented roughly 45-degrees to the rod instead of parallel. The angle split design, as it's called allows for easier passage through the cylinder.

2015 Chevrolet Colorado GearOn Edition is ready to do that outdoorsy thing

Bikes, skis, kayaks... the Chevrolet Colorado GearOn is ready to accommodate all of them, thanks to a trip to the Bowtie's accessories catalog. The special edition Colorado features the basics of Chevy's GearOn accessories, including a bars package, bed divider and tie-down rings, which can be supplemented with other accessories to haul all manner of outdoor equipment. Beyond that, though, Chevy has fitted a few other items to lift up the Colorado's styling, including gloss-black 18-inch wheels, black Bowtie emblems, a body-color grille, off-road assist steps and front foglights. It's a tidy little update to the compact truck's still-fresh styling. Check it out in our full gallery of live images, direct from the Chicago Auto Show. Related Video: Featured Gallery 2015 Chevrolet Colorado GearOn Edition: Chicago 2015 View 14 Photos Related Gallery Chevrolet Colorado GearOn Special Edition Image Credit: Live photos copyright 2015 Drew Phillips / AOL Aftermarket Chicago Auto Show Chevrolet Truck Videos Chicago

2016 Chevy Volt will be available across Canada, unlike most of US [UPDATE]

UPDATE: The story's been updated to add a response from General Motors of Canada. It's not enough that the Toronto Blue Jays may be the most intimidating team in Major League Baseball. Now, it appears that our neighbors to the north will also have some bragging rights in regards to General Motors' Chevrolet Volt extended-range plug-in vehicle. Specifically, most of Canada will have access to the 2016 version before most of the US will. In fact, the car will be available in Canada before people can buy it in Michigan. A trip to Windsor, Ontario, anyone? The Volt, which will boast a longer plug-in range than the current version, could go on sale in Canada as soon as November, GM Authority says. The model's second-generation version may debut in California as soon as this month, and is slated to be sold later this year in the 10 other states that abide by the so-called CARB (California Air Resources Board) rules for zero-missions vehicles. Those states include Oregon, Maine, New York and Massachusetts. But not GM's home state of Michigan. Either way, the new generation model's debut can't come soon enough for the US automaker, as Volt sales in 2015 have seriously lagged the 2014 numbers because of people waiting for the new version. "We will receive the 2016 Volt in Canada this fall, starting with our key Volt markets in Quebec, Ontario and British Columbia," wrote General Motors of Canada spokesman George George Saratlic in an e-mail to AutoblogGreen. "Note these are also the three provinces that provide provincial incentives on EV purchases. We'll then roll out Volt to the rest of the country." Last week, details were revealed about the first sales of the 2016 Volt, where marketing efforts will be concentrated among the largest plug-in buying states in the union. The other 39 states will get their shot starting next year with the 2017 model-year variant. Related Video: