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Mysterious white powder discovered at GM Orion Assembly

Workers at General Motors Orion Assembly Plant in Orion Township, MI uncovered a mysterious white powder in two different parts of the factory earlier this week, raising concerns about worker safety. "We can confirm that an unknown substance (white powder) was found on the floor outside of Gate 6 at Orion Assembly on Monday, August 29. On Tuesday, August 30, we had a second report of a bottle containing a similar substance found inside the plant," GM spokesperson Dayna Hart told The Oakland Press via email. GM stressed that incident didn't disrupt operations at the plant, and that the company was taking steps to ensure the safety of the sprawling factory's workers. That did include, an anonymous worker told The Oakland Press, closing off parts of the factory for two full days, as drug-sniffing dogs and crews in haz-mat suits descended on the area. "A sample of the substance has been sent to a laboratory for identification and results are expected later this week," Hart said. "All findings and actions have been shared with our employees." Orion Assembly currently builds the Chevrolet Sonic and Buick Verano, and will eventually be responsible for production of the new, all-electric Chevy Bolt early next year. Related Video:

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.

Steve McQueen's last movie car, now Pawn Stars-owned, up for auction [w/video]

The last car Steve McQueen ever drove in a movie is officially up for auction. The 1951 Chevrolet Styline DeLuxe Convertible you see above is now owned by none other than Rick Harrison of Pawn Stars fame, but once ferried McQueen around the set of his last film, 1980's The Hunter. That flick saw the Bullit star play a bumbling bounty hunter and didn't exactly set the box office on fire. McQueen bought the car after production wrapped, and four years later it sold at his estate sale at the Imperial Palace in Las Vegas.
Flash forward to 2003, and the convertible received a full restoration back to near-stock specifications. Hagerty Insurance estimates the car to be worth around $45,000 without the significant providence. Given its ties to one of film's most popular gearheads, the old Chevrolet could fetch up to 10 times that when it goes under the gavel in Ft Luaderdale, Florida on March 22. You can head over to the Auctions America site for more information. You can also check out the trailer for The Hunter below.