1967 Chevy Nova 2 Door Coupe on 2040-cars

Auto blog

Chevy bringing Spark RS Concept to SEMA

Well, the SEMA mess has well and truly begun. Every year, an increasing number of automakers flock to the Las Vegas auto show, bringing accessories and concept vehicles that are both awesome as well as occasionally questionable. Chevy will bring an RS concept of the new Spark to SEMA, signaling that its styling package will be applied to the brand's smallest vehicle in the near future. We can expect the usual stuff in a production Spark RS – larger wheels, a slightly sportier cabin, a more aggressive body kit, and a small drop in ride height – but for the concept, Chevy wasn't restrained by things like budget. The front splitter, and sill extensions, foglight surrounds, and rear bumper insert are all finished in carbon fiber. The 17-inch alloys are apparently inspired by the Corvette Z06's Z07 package, while the Dark Liquid Switchblade Silver paint is broken up only by a driver's-side stripe. The company is also using SEMA to show its new Red Line accessories, features both concept and production parts for the Trax, Camaro, Malibu, Colorado, and Sierra. Every vehicle gets Enhanced Silver Metallic paint, a charcoal finish on the roof, satin graphite/red graphics, black/red badge kits, and aside from the Colorado, tinted lamps. Individual mods for the Trax include relatively simple tweaks, including new 18-inch wheels, blacked-out bowtie badges, a lowered ride height, and custom badging. It's a similar story on the Malibu, except that its 19-inch wheels are a smidge larger, and its lowered ride height is the result of a concept kit. The first concept based on the new Camaro opts for 20-inch wheels, while adding a few more performance items. The ride height has been lowered, there's a new air intake system, and an upgraded brake package. Chevy has also replaced the front upper and lower grilles inserts with red accents. On the pickup side of the coin, the Colorado gets 18-inch wheels, new intake and exhaust systems, Goodyear Wrangler Fortitude tires, and flared wheelarches. The Silverado gets similar intake and exhaust upgrades, as well as the largest wheels of them all, with 22s at all four corners. The full-size truck also gets a Brembo brake package, while every vehicle, aside from the Camaro, gets Thule roof-mounted accessories. You can check out all six concepts in the gallery above, and then be sure to keep an eye open for live images from the floor of the 2015 SEMA show, slated to open next month.

Leaked GM document shows GMC Sierra I6 diesel is more powerful than F-150's

GM told us earlier this year that the 2019 GMC Sierra would be getting a 3.0-liter I6 diesel option, but it never mentioned power or fuel economy figures. Hold the phone though, because a leaked GM Canada document just showed up online that lists out the details we've been waiting for. Originally published by TFL Truck, the 3.0-liter oil-burner supposedly makes 282 horsepower and 450 pound-feet of torque. For those who are counting, that's more than the Ford F-150's 250 horsepower and 440 pound-feet from its 3.0-liter diesel. It soundly bests the 240 horsepower and 420 pound-feet of torque from Ram's 3.0-liter diesel as well. Fuel economy is another story, though. The promotional material states that it will get 28 mpg on the highway, which is 2 mpg short of the F-150's 30 mpg — mind you, it's only capable of that magical 30 mpg figure in rear-wheel drive form. There's another caveat here, too; these are numbers for Canada, so they're not exactly finalized EPA figures. However, we wouldn't expect drastic differences between the two when the American numbers come out. The leaked documents also state the diesel Sierra will be capable of towing 7,800 pounds. That number seems remarkably low when compared to the F-150, which can tow up to 11,400 pounds with its diesel. Extra power and torque would have us assume that GM could get even better numbers than Ford, so we're going to hold our final judgment for official word. A 10-speed automatic will do the shifting on the diesel, just like on the 6.2-liter V8. Since the Chevy Silverado is also expected to get this engine, we can assume the figures would be almost, if not identical, to those we see here. We recently drove the 2019 Sierra and Silverado without the diesel engines, so go check those reviews out if you'd like to know more of our thoughts on the redesigned GM trucks. Related video:

GM patent reveals new two-stage turbocharger

Modern turbochargers may be some of the best ever made, but performance is something that engineers are always trying to improve. According to GM Inside News, General Motors (GM) is hoping to alleviate some of the negative aspects of a two-stage turbocharger setup with a newly-patented design. The patent, that was filed on May 19, 2016, reveals a clever bypass system that allows the engine, a four-cylinder unit, to optimize both the low-pressure and high-pressure inlets for its respective functions. According to the filing, a conventional two-stage turbocharger setup is engineered to allow both turbines to operate simultaneously at low and mid engine speeds. At high engine speeds, only the low-pressure turbine works. The setup can't isolate either the low or high pressure side, which can impair low-end performance. GM's new two-stage turbocharger setup looks to eliminate this by linking the high-pressure turbo to the exhaust manifold through the high-pressure inlet duct. The low-pressure turbo is attached to the high-pressure turbo by a low-pressure inlet duct, which is linked to a connecting channel. A single actuator that is housed in the exhaust manifold creates a bypass that can opens the high-pressure inlet or close the connecting channel. Depending on what the engine load and speed is, the ECU guides the actuator—a single rotating spindle with discs corresponding to flanges on the high and low pressure sides—to isolate one of the two turbos. Isolating the turbos allow the respective inlets to be engineered for the best possible fluid dynamic performance. The setup should increase performance and decrease lag. There's no word on what car this setup will make an appearance on, but it will most likely be used in premium vehicles before trickling down to the rest of GM's vehicles. Related Video: News Source: GM Inside News, AutoGuide via GM Authority Cadillac Chevrolet GM Technology Sedan turbo patent engine turbocharging