2005 Jeep Liberty Limited Sport Utility 4-door 2.8l 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.

NHTSA investigating why Jeep recall fix is taking so long

Jeep's saga with the National Traffic Safety Administration and the voluntary campaign to repair 1.56 million vehicles for allegedly unsafe trailer hitches, is getting yet another chapter. The controversy appeared to finally be over in January when the automaker found a supplier for the replacement parts. Nothing is ever that easy, though, and the government regulator is now requesting documents from the company to clarify why the repairs are taking so long to begin.
Jeep parent company Chrysler has until July 16 to submit documents and answers to NHTSA explaining the situation. The regulator claims that despite its compromise to inspect and repair the models with improper hitches in June 2013, Chrysler didn't find a part supplier until December and didn't order the replacements until January. The government agency believes that the first components weren't manufactured until May of this year and vehicles may not actually be repaired until as late as August. According to the report, if the Chrysler doesn't supply what NHTSA is asking for, the agency could "take additional appropriate action as warranted."
Throughout this entire process, Chrysler has asserted that the vehicles met the applicable crash test standards of the time, and it has kept NHTSA abreast of the repair activity. In a recently released statement it said that the regulator analyzed eight rear impact reconstruction tests and found the replacement hitch to be safe. To keep up with the high demand for replacements, Chrysler is working with multiple suppliers, and they are running three shifts, six days a week to get the parts ready as soon as possible.