2004 Jeep Wrangler X Sport Utility 2-door 4.0l 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.

FCA goes all-in on Jeep and Ram brands on cheap gas bet

It's no surprise that as SUV and truck sales remain strong in the wake of unusually cheap gas, Jeep and Ram sales are taking off. What is a surprise is that FCA CEO Sergio Marchionne thinks that cheap gas will be a "permanent condition," and feels strongly enough about it to change up North American manufacturing plans. Jeep appears to be the biggest beneficiary of the product realignment. In addition to increasing the sales estimates for the brand worldwide upwards to 2 million units a year by 2018, the brand will get a flood of investment for new product and powertrains. Consider the Wrangler Pickup to be part of the salvo, as well as the Grand Wagoneer three-row announced in 2014 as part of the original five-year plan. The Wrangler four-door will get at least two new powertrains, a diesel and mild hybrid version, in its next generation. That mild hybrid powertrain may utilize a 48-volt electrical system like the one that's being developed by Delphi and Bosch – which the suppliers think will be worth a 10 to 15 percent fuel economy gain at a minimum. Down the road, in the 2020s, the Wrangler could adopt a full hybrid system. The diesel powertrain is planned for 2019 or 2020. The Ram 1500 is also pegged to receive a mild hybrid system, again potentially based on 48-volt architecture, sometime after 2020. Lastly, Jeep and Ram will take over some of the production capacity of existing plants. The Sterling Heights, MI, plant that builds the Chrysler 200 will now build the Ram 1500; the Belvidere, IL, facility that produces the Dodge Dart will take over Cherokee output; the big Jeep facility in Toledo, OH, will be used for increased Wrangler demand. In 2015, according to FCA's numbers, car and van demand went down by 10 percent, but SUV demand went up 8 percent and truck demand 2 percent. Considering that these are high-margin vehicles, FCA can't ignore the math. FCA also won't build any new factories to supplement production to meet demand, but instead are reshuffling production priorities. Think of it this way: FCA is gambling on cheap gas being a permanent part of our lives, at least into the 2020s. By doubling down on SUVs and trucks, the company stands to win big, unless a spike in gas prices changes the landscape. FCA isn't talking about a Plan B, so they're all in. It'll be interesting to see how this plays out.

Updated 2014 Jeep Grand Cherokee ace same controversial moose test it failed in 2012 [w/video]

Some background: one of the more scandalous international incidents of he-said/he-said from 2012 was when Swedish magazine Teknikens Varld put the Jeep Grand Cherokee through its "moose (or elk) test" and reported that the SUV nearly rolled over. That lead to a whole lot of accusations and rebuttals: more than one website and Chrysler's own blog reported that the Jeep was overloaded; Chrysler said Teknikens printed the magazine then let Chrysler respond, Teknikens answered all of the charges in a lengthy post and said Chrysler was given a chance to comment before it went to print; when Chrysler sent investigators to oversee the test and the Jeep didn't go up on two wheels as it did in the first test, furthermore all four wheels stayed on the ground when Auto Motor und Sport tested a Grand Cherokee in the same way.
Teknikens then re-ran the test with a new vehicle and said it's been doing this test since the 1970s, uses the loading information that Chrysler provides to the Swedish motor authority and the previous Grand Cherokee passed with no problem. In the second test, the Jeep failed again, then it gave Chrysler engineers access to the car's electronics and ran the test again. In that second round the Grand Cherokee didn't repeat the lurid two-wheel action, but in eleven runs it blew out front left tire seven times. Chrysler still objects to the results of all of those tests and maintains that vehicle was safe.
The 2014 Grand Cherokee was given its shot at the gauntlet in the latest round of moose tests, and Teknikens Varld reports that it passed without any problem at all, its stability control working perfectly, controlling motion at low speeds and all the way up to 44.1 miles per hour. You can watch the video of the new test and read the press release from the magazine on the updated Grand Cherokee below.