Jeep: Wrangler Rubicon 10th Anniversary 2 Door Jk 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.

Gilles defends 2014 Jeep Cherokee design as "very contemporary"

Following the forced-hand introduction of the 2014 Jeep Cherokee, there has definitely been a mix of responses revolving around everything from its design to the return of the legendary nameplate. As evidence of this, just check out the 1,000+ comments in our article last week and some of the many opinions that were voiced. Following this not-too-warm reception, Ward's Auto had a chance to talk to Chrysler designer chief - and SRT president - Ralph Gilles, who shed a little more light on the styling direction of the new Cherokee.
Rather than looking to previous models for inspiration, Gilles says that the Cherokee has been designed to be more contemporary, with Mark Allen, head of Jeep design, adding that a main goal was to make sure the design still looks modern five years from now. Interestingly, Gilles does point out that one of the design elements incorporated on the new Cherokee that pays homage to past Jeeps is the sharply downward angle for the leading edge of the beltline, which he notes is meant to mimic the look of the old YJ and TJ Wrangler models fitted with half doors. Of course, the squared-off wheel openings - a signature Jeep cue - are still used.
This is probably a design that will need to be seen on the street in actual daylight to properly assess, but in the meantime, we'll bring you full images and impressions when the Cherokee debuts at next month's New York Auto Show.

Jeep Grand Cherokee SRT gets power increase, minor tweaks for 2015

As a brand within Fiat Chrysler Automobiles, SRT may have an uncertain future, but it's pumping out some seriously mean machines anyway. The supercharged Hellcat V8 may be gobbling up most of the headlines with its 707 horsepower, but even the Grand Cherokee SRT is getting some small updates for the 2015 model year.
Most importantly for many enthusiasts, the Grand Cherokee SRT is getting a slight power bump. Don't expect the 700+ hp from the Hellcat, but this SUV sees a modest 5-hp and 5-pound-feet of torque improvement to bring output to 475 hp and 470 lb-ft for its 6.4-liter V8 with an eight-speed automatic. The minor change doesn't change the sprint to 60 miles per hour, clocking in at the same 4.8 seconds, or the tow rating at 7,200 pounds. Still, more grunt is never a bad idea.
Another new addition is the Active Noise Canceling system as a standard feature for this powerful SUV. It adds four microphones around the vehicle and uses the stereo system to nullify extraneous sound. However, Jeep claims that the meaty exhaust note from the V8 still gets through into the cabin for driver enjoyment.