1979 Jeep Cj7 Rolling Chassis 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.

2018 Jeep Grand Cherokee Buying Guide | Popular SUV questions and answers

The Jeep Grand Cherokee is several SUVs rolled into one. When equipped with the standard 3.6-liter V6, the Grand Cherokee is a refined and well-mannered sport-utility that delivers a comfortable ride, a handsome cabin, along with Jeep's legendary off-road prowess. At other end of the spectrum is the Trackhawk, a Grand Cherokee with the heart of a 707-horsepower muscle car. Powered by the same supercharged V8 found in the ferociously quick Dodge Challenger Hellcat, the Grand Cherokee Trackhawk is one of the fastest and wildest SUVs of all time. Between these extremes there are plenty of other options, including two somewhat less powerful (but still potent) choices of V8. An available air suspension not only helps to make the ride smoother, it can significantly raise the ride height for any rock-crawling moments you encounter. Here you'll find all the information needed to make an educated buying decision if you're considering a 2018 Jeep Grand Cherokee, including safety and reliability ratings, engine specs, horsepower, fuel economy ratings and pricing. We'll also summarize what Autoblog's professional auto reviewers think of the Jeep Grand Cherokee. Is the 2018 Jeep Grand Cherokee Safe? The Jeep Grand Cherokee scores four out of a possible five stars in the National Highway Traffic Safety Administration's overall crash-test rating system. The Grand Cherokee was tested in both rear- and all-wheel drive format. The two Grand Cherokee models tested earned four-star ratings in frontal impact tests, and five stars in NHTSA's side impact tests. The only difference between the two is regarding their resistance to rollover, with the rear-wheel drive Grand Cherokee scoring a three-star rating, versus four stars in the all-wheel drive model. The Insurance Institute for Highway Safety, which provides ratings for new vehicles based on its own comprehensive crash tests, found room for improvement when it comes to the Grand Cherokee's performance in its crash test regime. While it earned top marks in some categories – such as side impact crash tests, and front crash avoidance (when fitted with optional safety equipment) – the Grand Cherokee registered a "Marginal" and "Poor" rating for its performance in the Small Overlap Front test. This simulates a vehicle hitting a static object, such as a utility pole, with only a fraction of its front end.

Fiat Chrysler Automobiles: The next five years

Unless you've been living under a rock for the past 24 hours, you've no doubt read about all of the big future product news coming out of Fiat Chrysler Automobiles today. We had individual brand reports from Chrysler, Dodge, Jeep, Ram, Alfa Romeo, Fiat, Maserati and even Ferrari, but in the interest of simplifying and summarizing, we're going to list out the hard facts once more. Of course, with all of this still off in the future, there's still the possibility that a few changes will be made. But as of what we know right now, here's what's coming, and what's going away.
Chrysler
2014: Refreshed 300/300C, debuting at Los Angeles Auto Show