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Hennessey unleashes 2015 HPE700 supercharged Ford Mustang

Thanks to the 2015 Dodge Challenger SRT Hellcat there is a new magic number in the muscle car world - 707. To raise eyebrows these days in the power war, a vehicle needs to match or preferably exceed that palindromic figure. The tuners over at Hennessey took a look at it for their 2015 HPE700 Mustang and decided to go one better. Well, ten actually, because they bestowed their latest creation with 717 horsepower and 632 pound-feet of torque.
The HPE 700 Mustang takes the standard Mustang GT with its 5.0-liter V8 and turns up the power a few hundred notches with a Roots-type supercharger running at 7.25 psi. Hennessey claims that this boosted 'Stang can rocket to 60 miles per hour in about 3.6 seconds and cover the quarter-mile in 11.2 seconds at 131 mph. For those keeping score at home, those figures are very similar to Challenger Hellcat.
To cope with all of the added boost, the engine gets a high-flow throttle body, upgraded injectors, new fuel pump, stainless steel exhaust and Hennessey's calibration for the engine management. Pricing for the package is $59,500, including the base 2015 Mustang GT, but the company is limiting production to 500 units for the 2015 model year. Founder John Hennessey told Autoblog that he has already received about a dozen orders for them.

Ford Shelby GT350 Mustang is a lean, mean, Z/28-fighting machine [w/video]

If there's one thing you can count on, it's that the renewed rivalry between the Ford Mustang and Chevrolet Camaro will never, ever cease. For every version of Ford's pony car, there's an equally potent Chevrolet. And so with the debut of the Camaro Z/28 earlier this year, Ford has responded with a track-focused 'Stang of its own, resurrecting the Shelby GT350 name.
It looks to be a fine piece of work, this Mustang, with power coming from a naturally aspirated 5.2-liter V8 that will produce "more than 500 horsepower" and "above 400" pound-feet of torque. That grunt runs to the rear wheels via a six-speed manual transmission, and a Torsen limited-slip differential keeps everything in line.
But that's hardly the most impressive piece of the GT350 puzzle. Ford has increased the Mustang GT's chassis stiffness for duty here in the Shelby, and the coupe employs MagneRide damping which automatically adjusts based on road conditions and driver inputs. It's a first both for the Blue Oval and for the segment. And speaking of firsts, the GT350 uses a flat-plane crankshaft - something Ford has never included in a production V8 before.

NHTSA closes probes on Jeep Grand Cherokee, Ford Freestar and Mercury Monterey

The Detroit News reports the National Highway Traffic Safety Administration has officially closed its investigations into 2012 Jeep Grand Cherokee, 2004-2005 Ford Freestar and Mercury Monterey models. The separate probes found no issues that pose safety concerns. NHTSA began investigating certain Grand Cherokee SUVs over complaints that power steering hoses could detach during operation, thereby increasing the risk of a vehicle fire. Of the 24 reports of failure, none alleged smoke or fire in the engine bay, and Chrysler has since modified the power steering cooler assembly to reduce the likelihood of the failure.
Meanwhile, certain Ford Freestar and Mercury Monterey vehicles garnered a government probe after receiving complaints that the models were equipped with faulty scissor jacks. The agency had received six reports of the jacks failing or causing injuries, including one incident that resulted in a fatality. But NHTSA says the jack failure rate is similar to those found in other vehicles. In those six cases, the government agency found the jacks were being used for something other than changing a tire, and investigators could not determine whether the emergency brake was set or the rear tires were properly chocked.