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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.

Motor Trend puts Chevy Camaro Z28 and Porsche 911 GT3 Head 2 Head

Motor Trend admits, "This is an unfair comparison." But that doesn't make it any less fun to watch when they pit a Camaro Z/28 against the Porsche 911 GT3. The former has a 7.0-liter V8 with 505 horsepower and 481 pound-feet of torque shifted through a six-speed manual. The latter has a 3.8-liter flat-six with 475 hp and 324 lb-ft shifted through a seven-speed dual-clutch transmission. Yet those are only the little disparities – the big disparities are mass and money: the Camaro weighs 3,882 pounds and costs $76,150 as-tested, the Porsche weighs 3,267 pounds and costs $145,785. But they're both about hardcore performance, so MT takes them out on the street, to the drag strip, to the parking lot for figure eights and a skidpad test, and finally to Big Willow for Randy Pobst to give his professional assessment. Remember when a lotta people spent a lotta time debating Pirates vs. Ninjas? This is like that, only it's the "haul-ass good-time car" vs. the "track surgeon." Enjoy the debate in the video.

Chevy preparing new Camaro ZL1 Convertible?

It's a given that when an automaker introduces a new performance model, it's only a matter of time before an even hotter variant arrives. The Ford Mustang begets the Shelby GT350 and the Dodge Challenger R/T spawns the SRT 392 and Hellcat. And for Chevrolet, that progression sees the Camaro SS evolve into the ZL1. That's probably what our spies have captured here. The convertible variant of GM's most powerful Camaro is betrayed not by its big, black wheels or quad exhaust tips – both of those items have been fitted to the far tamer 1LE in the past – but by its brakes. To put it simply, they're enormous. The old ZL1 had 14.6-inch rotors in front and 14.4-inchers in the back, with Brembo-branded six-piston calipers up front and four-piston binders at the rear. While the overall size of the calipers doesn't appear to have changed much, it looks like the rotors – especially in front – seem to take up a larger space inside the front wheels than in last year's model. Perhaps Chevy moved to a straight 15-inch rotor? It's difficult to discern any more from these images, though. Chevy did a fine job with the camouflage, making it difficult to pick out ZL1-specific body parts. From the rear spoiler to the front fascia to the side sills, each body piece looks like it's the same as the standard Camaro or is just completely obscured. If this is a Camaro ZL1, it seems like Chevy may have just stuffed the vital organs inside the body of more pedestrian droptop. According to our spies, it's unlikely that Chevy will mix things up under the hood. Expect the 6.2-liter, supercharged V8 from the Corvette Z06 and Cadillac CTS-V to move the ZL1 from 550 horsepower to around 640 ponies when it debuts for model year 2017. A six-speed manual transmission will be standard, while the Camaro's big brother will probably donate its eight-speed automatic. Related Video: Image Credit: Brian Williams / SpiedBilde Spy Photos Chevrolet Convertible Performance chevy camaro zl1