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GM 6.2L EcoTec V8 rated at 21 mpg by the EPA

General Motors is already laying claim to best-in-class power for its new 6.2-liter V8 that will be offered in the 2014 Chevy Silverado and GMC Sierra this fall, and now it has released fuel economy numbers for the big engine. Available as an option on the Silverado LTZ and High Country (shown above) models as well as the the Sierra SLT and Denali trims, the 6.2L EcoTec3 V8 will return 15 miles per gallon in the city and 21 mpg on the highway on rear-wheel-drive trucks; these numbers drop by one mpg each on four-wheel-drive models.
These estimates are in addition to the engine's 420 horsepower, 460 pound-feet of torque and max trailering capacity of 12,000 pounds, and considering all that power it's not terribly far away from the fuel economy of GM's equally new 4.3-liter V6 and its rating of 18 mpg city and 24 mpg highway. This announcement comes just days after a report indicated that GM is unable to keep up with the demand of the 5.3-liter V8 in the fullsize Chevy and GMC trucks due to supplier issues. GM's official press release for the 6.2-liter V8's fuel economy is posted below.

GMC Syclone pickup returns via Special Vehicle Engineering

The original GMC Syclone was a 1991 mid-size Sonoma pickup turned muscle truck. Its heavily modified 4.3-liter V6 sported a turbocharger, intercooler, and modified internals, raising output to a Corvette-baiting 280 horsepower and 350 pound-feet of torque. The engine was paired with a four-speed automatic, rear-biased all-wheel drive, and four-wheel antilock brakes (the coming thing). With an all-black livery and a lowered ride height, the Syclone looked the business, and backed up those looks with a 0-to-60 time of 4.3 seconds and a 13.4-second quarter-mile, according to contemporary magazine testing. Given all the recent interest in high-performance pickups, it's amazing that GMC hasn't revived the Syclone. But where manufacturers leave an opening, the aftermarket steps in — in this case that's Specialty Vehicle Engineering, which as CNET reports is resurrecting the nameplate for a build of 100 new Syclones, based on the GMC Canyon, which will update the idea a lot more horsepower. The 2019 Syclone takes as its starting point the extended-cab version of the Canyon. The engine is again a V6, this time a 3.6-liter fitted with a supercharger and a custom cat-back exhaust system, upping output to 455 ponies from the stock 306. SVE's Syclone can be had with rear- or all-wheel drive, and it, too, features upgrades to the brakes and chassis. Six-piston front calipers are fitted in place of the standard four-piston units, and the slotted front rotors are upsized from 12.2 inches to 13.6. The suspension is lowered by two inches up front and five inches at the rear, with stiffer traction bars, bushings, dampers, and a heftier rear anti-roll bar. Unlike the original, the modern Syclone can be had in colors other than black — any of the standard Canyon hues are available — but the appearance is customized with rocker-panel extensions, body-color grille and rear bumper, and a composite hood insert. The interior gets embroidered logos and badges, including a numbered plaque on the dash. The price for the Syclone is $39,995 — that's for the package, on top of the cost of the truck. But at least ordering is easy: The Syclone package can be ordered through select GMC dealers.

GM doubles miles open to its Super Cruise technology

DETROIT — General Motors said on Wednesday owners of certain vehicles equipped with its Super Cruise assisted driving system will now be able to use it on 400,000 miles (643,740 km) of North American roads, doubling the current operating area as Tesla and other automakers race to deploy hands-free cruising technology. GM's Super Cruise system, like Tesla's Autopilot system, is a driver assistance system, and does not enable true autonomous driving. Spurred by Tesla's aggressive deployment of Autopilot, and Tesla Chief Executive Elon Musk's promises of a more advanced "Full Self Driving" system, GM, Ford, Volkswagen and Mercedes-Benz are racing to deploy competing partial automation technology in major markets. At the same time, safety regulators are showing concern that drivers do not understand that Autopilot and similar systems are not designed to take over driving in every circumstance. The GM system's sensors and software allow a motorist to cruise with hands off the wheel on highways that have been mapped in detail. But the driver is expected to stay alert and ready to take over the car. GM uses technology to monitor the driver, and Super Cruise will sound alarms or slow the car to a stop if it detects that a driver is not responding. Starting later this year, GM plans to enable vehicles equipped with Super Cruise and the company's latest vehicle electronic system to operate hands-free on major, undivided highways in the United States and Canada, as well as additional miles of divided, interstate highways. Currently, Super Cruise operates only on interstate, divided highways. The expansion, enabled by wider digital mapping, will allow owners of properly equipped GM vehicles to cruise hands-free on stretches of Route 66 and the Pacific Coast Highway in the U.S. West or the Trans-Canada highway in Western Canada, GM said. Many of the new roads GM has mapped are in rural, heartland states where GM pickup trucks are popular. GM plans to offer Super Cruise as an option on its Chevrolet Silverado and GMC Sierra large pickups later this year. GM has said previously it intends to offer Super Cruise as an option on 22 models by the end of 2023. Depending on the model, Super Cruise costs $2,200 to $2,500 to add as an option. (Reporting by Joe White in Detroit; Editing by Matthew Lewis) Related video: Cadillac Chevrolet GM GMC Technology Super Cruise