2007 Jeep Grand Cherokee Laredo Sport Utility 4-door 3.7l Silver Automatic on 2040-cars

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Watch this 650-hp Hennessey Jeep Grand Cherokee go from 0-60 in 3.9 seconds

Hennessey Performance Engineering has created an HPE650 package for the Jeep Grand Cherokee SRT fitted with the 6.4-liter Hemi engine. When it leaves the showroom floor it has 470 horsepower and gets from 0-60 miles per hour in 4.8 seconds. When it leaves Hennessey's garage floor after the upgrade it has 650 horsepower - 530 hp at the wheels, according to Hennessey - and gets to 60 mph in 3.9 seconds on its way to running the quarter-mile in 12.6 seconds.
There's more than just a Roots-type supercharger bolt-on, with ported cylinder heads and high-flow headers among the many changes made to the engine. You can watch this pre-2014 facelift silver model prove its spec sheet on the drag strip in the video below.

Jeep idles second shift it hired a month ago for 2014 Cherokee

In an unusual move, Chrysler is idling its recently hired second shift of 2014 Jeep Cherokee builders because, Chrysler spokeswoman Jodi Tinson said in a statement, it already has built the "critical number of vehicles we need to stock dealerships once containment is released," Automotive News reports.
After the "critical" 9,430 Cherokees were built, the layoff was enacted so as not to strain the automaker's logistics partners before the Cherokee is actually released. Chrysler says the temporary layoff will last about two weeks, with 500 workers out of work and another 600 reassigned at the Toledo Assembly Complex where the sports utility vehicle was being built. The second-shift workers were hired on August 19.
Chrysler previously insisted that it would release the Cherokee to dealerships by the end of the third quarter, and it initially planned to start selling the SUVs in mid-August. Apparently the Cherokee needed a software fix before hitting showrooms, which is how Chrysler explains why the release schedule is out of whack. We're thinking that this software fix addresses the "powertrain calibration" issue that delayed the first media test drives of the model. According to the Toledo Blade, Chrysler has admitted it is doing "extended quality validation testing" but refused to provide more information.

Updated 2014 Jeep Grand Cherokee ace same controversial moose test it failed in 2012 [w/video]

Some background: one of the more scandalous international incidents of he-said/he-said from 2012 was when Swedish magazine Teknikens Varld put the Jeep Grand Cherokee through its "moose (or elk) test" and reported that the SUV nearly rolled over. That lead to a whole lot of accusations and rebuttals: more than one website and Chrysler's own blog reported that the Jeep was overloaded; Chrysler said Teknikens printed the magazine then let Chrysler respond, Teknikens answered all of the charges in a lengthy post and said Chrysler was given a chance to comment before it went to print; when Chrysler sent investigators to oversee the test and the Jeep didn't go up on two wheels as it did in the first test, furthermore all four wheels stayed on the ground when Auto Motor und Sport tested a Grand Cherokee in the same way.
Teknikens then re-ran the test with a new vehicle and said it's been doing this test since the 1970s, uses the loading information that Chrysler provides to the Swedish motor authority and the previous Grand Cherokee passed with no problem. In the second test, the Jeep failed again, then it gave Chrysler engineers access to the car's electronics and ran the test again. In that second round the Grand Cherokee didn't repeat the lurid two-wheel action, but in eleven runs it blew out front left tire seven times. Chrysler still objects to the results of all of those tests and maintains that vehicle was safe.
The 2014 Grand Cherokee was given its shot at the gauntlet in the latest round of moose tests, and Teknikens Varld reports that it passed without any problem at all, its stability control working perfectly, controlling motion at low speeds and all the way up to 44.1 miles per hour. You can watch the video of the new test and read the press release from the magazine on the updated Grand Cherokee below.