2010 Chevy Silverado Texas Ext Cab Lt Leather 20's 55k Texas Direct Auto on 2040-cars

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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.

Seeing the Detroit Auto Show via drone

Seeing the Chevrolet display at the Detroit Auto Show is worth doing this year, and not just because of the new Corvette Z06, Volt and Bolt concept. In order to attract the new kids, The Bowtie has gone what the old kids used to call "buck wild" with their show stand at Cobo Hall. A Corvette Z06, Trax, and Colorado are parked along a central aisle, called Mainstreet, at the end of which is a 20-foot-tall, 73-foot long transparent screen lording over the new Volt. Elsewhere are five more 20-foot-tall screens broadcasting nine stories today's Chevrolet wants to tell about its vehicles, from performance to belief in the power of play to its 4G LTE-equipped OnStar telematics service. Then there are the social media and virtual reality safety installations, the community presentations and more. Chevrolet flew a drone through the stand to show off what it's doing, which is has replaced eye-level video as the next best thing to being there. You can check it out in the video above.

IIHS Crash-tests Expose American Muscle Cars' Weaknesses | Autoblog Minute

Turns out American muscle cars aren?t that strong according to IIHS crash tests. The Insurance Institute for Highway Safety put three iconic American sports cars through a range of performance crash tests. Chevrolet Dodge Ford Autoblog Minute Videos Original Video crash test camaro challenger