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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.

2014 Jeep Cherokee facing production delay

Jeep's bold-faced new direction spearheaded by the 2014 Cherokee is facing some teething issues. According to a report by the Detroit Free Press, production start-up of the controversial new utility vehicle at its Toledo North facility is running about a month behind schedule "due to a wide range of issues." That's according to Mark Chernoby, senior vice president of engineering at Chrysler.
Chernoby maintains that the issues being encountered aren't unusual for the launch of a new vehicle - particularly one with a new powertrain - and he downplayed the delay, telling Jeep dealers that they "will have ample inventory of the midsize SUV by fall." Among the kinks being worked out? Calibrating the Cherokee's cutting-edge ZF nine-speed automatic transmission and refining assembly line tasks to make the process more efficient.
Chrysler expects to start building retail-ready versions of the Cherokee around mid-June, with official sales slated to start in September.

Jeepster name may be used for Fiat-based baby Jeep

In 1948, Willys-Overland, the forbearers of Jeep, built a vehicle called the Jeepster. It was a funky little thing, designed as a mix of the more rugged Jeeps that came before with what was then a modern car, which arguably makes it the world's first crossover. The name was later revived from 1966 to 1972, which means for Jeep enthusiasts, it has some history.
Now, the modern Jeep brand may revive the Jeepster name for a new product, likely based on Fiat bones, that will slot in at the bottom of the brand's range underneath the soon-to-depart Compass and Patriot. The report comes from Australia's Drive, which cites a dealer source that has seen the vehicle.
That same dealer confirmed there is a link between the Jeepster and the rumored Fiat 500X, and that the former will be available in both front and all-wheel-drive variants. The source also claims both gas and diesel engines will be available, although as this is an Aussie site, we shouldn't take that to mean we'll get a diesel Jeepster in the US.