2014 Jeep Wrangler Sport 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 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.

Jeep Wrangler Copper Crawler is our idea of a restrained Mopar shopping spree

According to a recent report, the Jeep Wrangler is the most popular SUV for customization, and this is backed up by the fact that the iconic off-roader was just named the Hottest 4x4-SUV at SEMA for the fourth year in a row. Looking for ways to keep its customers in-house rather than going aftermarket, Jeep and Mopar are always teaming to offer exciting new parts and pieces for the JK Wrangler.
Compared to most other Wranglers on display at SEMA - as well as other Chrysler Mopar SEMA concepts - the Jeep Wrangler Copper Crawler is surprisingly reserved, but should be no less exciting for owners to give their Wrangler a distinctive look. Starting off with an eye-catching copper paint scheme, the Jeep then goes on a Mopar catalog shopping spree with its matte black grille, black beadlock wheels, two-inch lift, Rubicon bumper (with a winch and aero end caps up front) and rocker panel and taillight guards.
Jeep also upgraded the Wrangler's transfer case for low-speed rock crawling (hence the vehicle's name) and cold-air intake for extra measure.