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More 2017 Chevy Bolt powertrain details revealed

We've seen the production version of the Chevy Bolt electric vehicle. We've driven a prototype version. And now it's time to get some details about the powertrain. After the production version's reveal at CES last week, GM trotted out the Bolt EV for its Detroit debut this morning. The company brought with it a bunch of technical specifications. We'll start with the most important part of an EV: the battery. GM has put a 60-kWh lithium-ion battery that weighs just just 960 pounds into the floor of the Bolt. As previously announced, the Bolt's 288 cells will be able to go over 200 miles on a full charge. That full charge takes nine hours on a Level 2 EVSE thanks to the onboard 7.2-kW charger. Of course, a full charge won't be that important most days, which is why GM says that you can get 50 miles of range in "less than two hours" on Level 2. There's a SAE Combo DC fast charging option as well. The battery will have an eight-year/100,000-mile warranty. The Bolt will be able to sprint up to 60 miles per hour in "less than seven seconds" thanks to a 150-kW/200 horsepower motor in the Bolt. The motor is a new GM design that can produce up to 266 pound-feet of torque. The Bolt uses a shift-by-wire system and an, "offset gear and shaft configuration tailored to meet efficiency and performance targets." The Bolt EV's powertrain has a 7.05:1 final drive ratio. You can read all of the details direct from GM below. Related Video: Drive Unit and Battery at the Heart of Chevrolet Bolt EV Engineers focus on careful balance of range and performance DETROIT, Mich. – The 2017 Chevrolet Bolt EV does more than set a new benchmark for affordable, long-range EV driving. It also raises the bar when it comes to driving performance. Engineers developed the Bolt EV's propulsion system to offer more than an estimated 200 miles (based on GM estimates) and a delightful driving experience that's more akin to a compact sports sedan than a small utilitarian crossover. "Being the leader in range and affordability means nothing if the car isn't going to excite you each time you get behind the wheel," said Josh Tavel, Chevrolet Bolt EV chief engineer. "That's why the team was tasked with delivering a propulsion system that would also make the Bolt EV an electric vehicle that owners would love to drive." Single Motor Drive Unit Like most EVs on the road, the Bolt EV's drive system uses a single high capacity electric motor to propel the car.

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.

Chevy donates first 2015 COPO Camaro for wounded vets

Want to get your hands on a new COPO Camaro? Only 69 will be made this year before it's phased out ahead of the next Camaro's arrival. And the very first one will be auctioned off this weekend in Palm Beach. That's where Barrett-Jackson will be selling the hand-built drag-racer with the serial number 2015COPO001. The vehicle is being donated by Chevy, with 100 percent of the proceeds benefiting the Achilles Freedom Team of Wounded Veterans, a charitable organization that helps disabled athletes, especially veterans of the armed services. Introduced last fall at SEMA, the 2015 COPO Camaro is built specifically for drag racing with a 350-cubic-inch LSX racing engine with a 2.9-liter Whipple supercharger. It's got 555 horsepower, a three-speed automatic transmission (it's a drag machine, not a circuit racer after all), all the requisite safety equipment, special suspension setup, unique livery and a quarter-mile time in the mid-eights. Look for this unique example to cross the auction block at around 5 PM on Friday, April 18, when we hope it will raise a princely sum for a good cause. 2015 COPO Camaro No. 1 Sale to Benefit Disabled Veterans Top bid from Barrett-Jackson goes to Achilles Freedom Team of Wounded Veterans DETROIT – Chevrolet is selling the first 2015 COPO Camaro race car to raise money for Achilles Freedom Team of Wounded Veterans, which helps wounded veterans participate in marathons and share their success within a supportive community including their families. The hand-built car carries serial number 2015COPO001. It will be sold on Saturday, April 18, at the Barrett-Jackson Palm Beach auction, with 100 percent of the winning bid going to Achilles Freedom Team of Wounded Veterans, a non-profit organization that helps disabled athletes, including veterans, gain access to races, equipment, and training dedicated to improve their physical abilities. "This sale gives the highest bidder the opportunity to buy the first of only 69 factory-assembled 2015 COPO Camaro race cars, the final year of the fifth-generation Camaro," said Jim Campbell, U.S. vice president of Performance Vehicles and Motorsports. "Chevrolet is excited to offer this milestone Camaro to help a very worthy organization." Chevrolet introduced 2015 COPO Camaro No. 001 last fall at the SEMA Show in Las Vegas, and it has been featured in Chevrolet Performance advertising and other marketing initiatives.