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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.

Recharge Wrap-up: Tesla sells Model S 85 and 70D in Malaysia, Chevy Spark EV built using clean energy

Tesla will send Model S 70D and Model S 85 EVs to Malaysia for leasing to government-linked companies. Only those companies will have access to the models as a two-year lease, which will be imported and leased by Malaysian Green Technology Corporation. The plan is part of an initiative by the Ministry of Energy, Green Technology and Water to allow government officials and other influential people to get to know the electric vehicles and the benefits that come along with them. Most of the 120 vehicles available will be the 70D model, and the lessee companies will have the option to purchase the cars at the end of the two years. Read more from Paul Tan's Automotive News. Wanxiang is hosting students from Delaware in China as part of a program to learn Mandarin and visit schools and science and technology sites. Wanxiang, the auto parts company that acquired Fisker (which had manufacturing based in Delaware) and battery maker A123 Systems, will give the students tours of its solar technology facilities, among other places, and see what daily life is like for families in the region. The program helps students interested in science and technology to foster marketable skills — like learning a foreign language — that will help them get jobs in industries around the world. Read more at Delaware Online. The Chevrolet Spark EV's electric motor (pictured) and drive unit are manufactured using clean energy. The e-motors building of the General Motors Baltimore Operations complex has a new rooftop solar array and uses LED and CFL lighting, helping the building recently earn LEED Silver certification. The landfill-free facility also takes advantage of the 1.23-megawatt solar array on the grounds, helping it source six percent its energy from renewable sources. The plant has reduced its energy intensity by 15.5 percent in three years, and continues to work toward reducing consumption and sourcing clean energy. "We believe reducing our environmental footprint is good for the climate and good for our business," says GM Executive Director of Global Public Policy Greg Martin. Read more in the press release below. Spark EV Motor Plant Fueled by Green, Clean Energy ENERGY STAR®, USGBC and Maryland state agency recognize facility's efforts WHITE MARSH, Md. – Chevrolet recently began selling the Spark EV to Maryland commuters able to take advantage of the state's robust charging infrastructure.

Is Buick's surprise Detroit concept a Camaro-sized coupe?

Tomorrow night marks the unofficial start of the 2016 Detroit Auto Show. Keep your eyes peeled for a number of reveals, including a surprise debut from Buick. Yes, Buick. And we think it's going to be something really hot. According to a report from Bloomberg, the Tri-Shield's secret car could be a Camaro-sized sport coupe concept. As Bloomberg explains, it'd certainly gel with the impression the company is trying to put out – that it's no longer a brand for those with one foot in the grave. Introducing a sports coupe, even as a concept, could certainly reinforce that message. And if it happens to make production – which is not a certainty, Bloomberg's secret source says – it could certainly help Buick drive its average buyer age down from 59. Bloomberg doesn't offer any speculation on Buick's new coupe, but we have no problem making educated guesses. Our most reliable conjecture is this: it will ride on General Motors' Alpha platform, which underpins both the Camaro and the Cadillac ATS. And with a certain twin-turbocharged V6 in the GM stable, we've got an idea of what kind of engine could be shown. That speculation will have to suffice for now. But don't worry, we'll have official details, live images, and video tomorrow when Buick unveils its new concept in Detroit's Eastern Market.