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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

GM might outsource vans to AM General

General Motors will possibly boost production of the Chevrolet Colorado and GMC Canyon at the Wentzville Assembly Plant in Missouri by contracting out some commercial van manufacturing to AM General. Demand for the two midsize trucks continues to boom, and GM would like to take advantage of the strong market for them. The possible deal came to light in a letter to workers at the factory, according to Automotive News. "This potential partnership would free up production capacity and allow the organization to capitalize on our ability to build midsize trucks to further satisfy customer demand," a portion of the document allegedly said. AM General would reportedly only take over assembly of the cutaway versions of the Chevy Express and GMC Savana. Customers and critics have quickly embraced the latest Colorado and Canyon since their introduction. The Chevy just won back-to-back Motor Trend Truck of the Year awards. GM also had to add a third shift and extra workers in 2014 just to keep up with demand. The Wentzville plant even increased employment on the weekends earlier in 2015 to assemble an extra 2,000 of the trucks each month. While the two pickups boom, deliveries for the Chevy Express and GMC Savana are down 26.9 percent and 26.6 percent respectively through the first 10 months of the year. GM doesn't break out numbers for the cutaway versions, but they make up about a third of production, according to Automotive News. AM General built the Humvee for the US military and does some contract work with automakers. For example, the company's Indiana factory now produces the Mercedes-Benz R-Class for export to China. Here's hoping this potential deal will help both GM and AM General keep their factories humming. Related Video:

Chevy's latest Silverado videos assume we're idiots

UPDATE: This article has been revised to reflect that any mention of materials used in a future Chevrolet Silverado is speculation. Can we have a sound, rational debate about the merits of aluminum versus steel? According to Chevrolet's latest marketing videos pitting the Silverado against the Ford F-150, the answer is no. The tone of all three ads is almost Orwellian: steel good, aluminum bad. Of course, this will all be a hilarious joke when an aluminum-bodied Silverado comes in 2018. That's an if, as a member of the General Motor public relations team has reminded me that any articles regarding future product are pure speculation. Until then Chevy needs to sell the current Silverado, with its body comprised chiefly of steel, against the Ford F-150's lightweight aluminum panels. Instead of touting the merits of the "most-dependable, longest lasting pickup," the strategy seems to center around negative propaganda towards the 13th element. The tone of all three ads is almost Orwellian: steel good, aluminum bad. Of the three videos, the most fair is Silverado vs. F-150 Repair Costs and Time: Howie Long Head to Head. Basically: aluminum costs more than steel, it's more difficult to repair, and requires special equipment for body shops. In terms of Chevy versus Ford, the blue oval truck costs more and takes longer to repair - an average of $1,755 more and 34 more days in the shop, according to the ad. But why stop there when you can have pitchman Howie Long raising an eyebrow at random facts? When Silverado Chief Engineer Eric Stanczak says of the Ford, "It's manufactured in a way that combines aluminum, rivets, and adhesive in a process that's different than Silverado." Long responds, "Huh. Interesting." At the end of the video, Long says "I'd be interested to know what happens to insurance costs." Note he's not saying anything substantive. If Chevy's legal team could sign off on some facts about insurance rates, it would be in this ad. On our Autoblog Cost to Own calculator, there is no significant difference in projected insurance costs between the two trucks. But at least that ad has facts. The other two videos are pure hype. In Cages: High Stength Steel, real people are asked what they think of aluminum and steel in a room with two cages. Then a bear is released into the room, and the subjects scurry to the safety of the steel cage.