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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.

General Motors reportedly considering small electric pickup

General Motors is considering adding a small entry-level model to its range of electric pickups, according to a recent report. The carmaker is currently showing a prototype to a select group of customers to gather feedback about the model before executives decide its fate. Industry trade journal Automotive News claims that it saw the pickup during a workshop organized by General Motors and describes it as being "smaller than the Ford Maverick and the Hyundai Santa Cruz." For context, the Maverick stretches about 200 inches long, 73 inches wide, and 69 inches tall, so it's around 12 inches shorter, 11 inches narrower, and 10 inches lower than the recently-unveiled Chevrolet Colorado. It sounds like this little GM truck would be closer in size to the Brazilian-market Chevy Montana, pictured at top. But unlike the Montana, the model that Automotive News got a look at had two doors, a "low roofline," a four- to four-and-a-half-foot cargo box, and a design described as futuristic and sporty. If launched, the yet-unnamed pickup would be marketed as an "affordable" EV with a base price pegged under $30,000. However, that's a big if: the pickup — whose name hasn't been announced — hasn't been approved for production. "We're creating these to get a reaction and then to try to modify it or move on," Michael Pevovar, the director affordable EV and crossover design for Chevrolet, told the publication. "The input may come back that it's just too small, and that's okay," he added. If it turns out to be too small for buyers, General Motors hasn't ruled out building its entry-level electric pickup on a different architecture to make it a little bigger. It's too early to tell where the electric pickup would slot in the General Motors portfolio if executives approve it. Chevrolet immediately comes to mind, especially considering the sub-$30,000 price point. The model would make more sense with a bowtie on its front end than with a Cadillac emblem, GMC's trucks are normally positioned higher than Chevrolet's, and Buick hasn't built a pickup in many decades. Similarly, there's no word on when it would enter production or where it would be built. With that being said, there's very clearly a market for affordable, small pickup trucks. As of the third quarter of last year, Ford had sold more Mavericks than it had the Expedition or the Ranger. Hyundai hasn't sold as many Santa Cruz trucks, but it's still not too shabby, having beaten out the Venue and Accent last year.

GM to build next-gen Chevy Cruze in Mexico

As one of its global products, General Motors builds the Chevy Cruze for local consumption at assembly plants around the world: in Australia, South Korea, Vietnam, Thailand, China, India, Kazakhstan, Russia, Brazil and Ohio. The automaker is expected to trim those locations for the next generation of its compact sedan, but its latest announcement has it adding a new site to the list: Mexico. As part of a $350-million investment, GM's plant at Ramos Arizpe in Coahuila will gear up for production as one of several sites that will be charged with building the next-gen Cruze. The General has yet to announce just which plants those will be, but it has confirmed that the Lordstown, Ohio, site will once again be among them. The plant in St Petersburg, Russia, which has produced the current Cruze, is being shut down, as is the Holden plant in Elizabeth, Australia. The Ramos Arizpe assembly plant currently puts together the Chevy Sonic and Captiva as well as the Cadillac SRX, but has over the course of its 34-year history handled a variety of models for the Chevy, Pontiac, Buick, Cadillac, Saturn, Opel and even Saab brands. The site handles a quarter of GM's production in Mexico, and exports 87 percent of its capacity to other markets. Invertira GM 350 mdd en Ramos Arizpe para fabricar siguiente generacion de Chevrolet Cruze 2015-03-23 - Se consolida GM de Mexico como el sexto productor global de vehiculos para General Motors Company Ramos Arizpe, Coahuila - General Motors de Mexico anuncio este dia que invertira 350 millones de dolares en su Complejo de Manufactura Ramos Arizpe, para fabricar en estas instalaciones la siguiente generacion del modelo Chevrolet Cruze. "Esta inversion, que forma parte de los 5 mil millones de dolares anunciados en diciembre pasado para todo el pais, fortalecera la presencia de GM Ramos Arizpe en la produccion de nuestra compania a nivel mundial y, por supuesto, consolidara a Mexico como el sexto productor de automoviles para GM Company, con el 7% de la produccion global", informo Ernesto M. Hernandez, Presidente y Director General de GM de Mexico. En una reunion de trabajo en la que participaron Ruben Moreira, Gobernador del Estado de Coahuila y Rogelio Garza, Subsecretario de Industria y Comercio del Gobierno Federal, el Presidente de General Motors en el pais aseguro que el Complejo GM Ramos Arizpe se ha consolidado como un iman para las inversiones de la compania a nivel global. Adicionalmente, Ernesto M.