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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.

GM investing $167m in Spring Hill for new midsize vehicles

General Motors has announced a large investment in its Spring Hill, Tennessee facility. The former home of Saturn production will be getting a $167 million addition to a previously announced $183 million, to cover a pair of new midsize vehicles. The investment is expected to create 1,800 jobs at the factory.
That $350 million is being divvied up for a pair of programs at Spring Hill. The first will take the bulk of the money ($223 million) and create 1,000 of the 1,800 jobs, while the other will take the remaining $127 million and generate the leftover 800 positions. But GM says the investment will cover "midsize vehicle programs." So what could they be?
The leading candidate in our minds is a new crossover for Buick, called the Anthem, that will slot between the Encore and Enclave, but will be slightly smaller than the Equinox and Terrain. As we've explained, the new model will likely be the first product to sport GM's new D2UX platform, which will eventually replace both the Delta and Theta platforms. Spring Hill is already building the Equinox, so there could be some credence to this theory.

First-edition Detroit muscle raises millions for charity at Barrett-Jackson

Amidst all the classic metal crossing the auction block each year in Scottsdale, AZ, Detroit automakers have a tradition of donating the first examples of their most enticing new muscle cars, with the proceeds of their sales going towards worthwhile charities. This year, Barrett-Jackson handled three noteworthy examples. The highest price among them was the first Ford Shelby GT350R Mustang with the VIN #001, which raised $1 million for the Juvenile Diabetes Research Foundation. General Motors donated the first new Chevy Corvette Z06 Convertible, the first retail example of the droptop supercar garnering $800,000 for the United Way. Along with the Z06, GM also donated the first new 2016 Cadillac CTS-V sedan, which brought in $170,000 for Detroit's College for Creative Studies. Although these were the headline Motown muscle machines furnished by the automakers themselves, they weren't the only vehicles auctioned off for worthy causes. A 1950 GM Futurliner bus donated by collector Ron Pratte led the charge when it brought in $4.65 million for the Armed Forces Foundation. Other lots included a custom Jeep Wrangler donated by SEMA ($85k), a new M5 donated by BMW ($800k), a '79 Oldsmobile Cutlass Hurst ($140k), '39 Cadillac LaSalle C-Hawk ($410k), Jeff Gordon's 1999 NASCAR-spec Chevy Monte Carlo ($500k) and a Victory Cross Country 8-Ball motorcycle ($180k). All told, the charity lots raised over $8.7 million for local and national charities. BARRETT-JACKSON REACHES HISTORIC HIGHS FOR SALES, CROWDS AND CELEBRITY APPEARANCES IN SCOTTSDALE • Barrett-Jackson sold 1,611 vehicles, which went for more than $130 million (unaudited), smashing records in the company's 44-year history during the 10-day auction at WestWorld of Scottsdale • Automobilia sales nearly tripled world records, with 2,000 pieces selling for more than $6.55 million • Celebrity attendance and crowds, along with ratings on Discovery and Velocity, spike SCOTTSDALE, Ariz. – Jan. 18, 2015 – Barrett-Jackson, The World's Greatest Collector Car AuctionsTM, reached historic highs during the Scottsdale auction at WestWorld from Jan. 10-18, 2015. During the 10-day auction, Barrett-Jackson recorded more than $130 million in vehicle sales (unaudited) and a world record $6.55 million in automobilia sales (unaudited), making it the highest auction in sales to date. The Ron Pratte Collection alone brought in over $40.44 million in vehicle and automobilia sales.