2012 Gmc Sierra 1500 Slt Crew Cab Pickup 4-door 6.2l on 2040-cars

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GM's 2014 Trucks Receive Five-Star Crash Rating

This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. The highly-anticipated 2014 Chevrolet Silverado 1500 and GMC Sierra 1500 received Overall Vehicle Scores of five stars from the National Highway Traffic Safety Administration's New Car Assessment Program, the highest possible safety rating. They are the first pickup trucks to receive a five-star rating since more rigorous safety standards were implemented in 2011, according to Autoblog. General Motors said in a written release that new technologies, ultra-high-strength steels and six standard airbags helped the automaker improve the truck's performance in crashes. Related Gallery Ford, Chrysler Offer Power With Smaller Engines In New Trucks GM GMC Safety

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.

Nissan Z Proto, next-gen Hyundai Tucson and a hi-po mystery Bronco | Autoblog Podcast #645

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Senior Editor, Green, John Beltz Snyder and News Editor Joel Stocksdale. In the news this week, Ford has teased some sort of high-performance Bronco, Nissan unveiled the Z Proto, Hyundai revealed the next-gen Tucson and GMC teased the Hummer EV's "Crab Mode." Our editors break that all down for you, and share some insights and opinions before they turn to the cars in their own driveways. This week, they've been spending time with the 2020 Mercedes-AMG G 63, as well as the 2020 BMW Alpina B7. Autoblog Podcast #645 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Ford's beefed-up Bronco prototype stars in new teaser photo Nissan Z Proto previews the retro, rear-drive, turbo, manual future of the Z All the Nissan Z cars that got us to the Z Proto 2022 Hyundai Tucson debuts with striking styling inside and out GMC Hummer teases crab mode, reveal set for Oct. 20 Cars we're driving: 2020 Mercedes-AMG G 63 2020 BMW Alpina B7 Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video: