2021 Jeep Grand Cherokee 80th Anniversary 4x4 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.

Chrysler axes old V6s, goes all-Pentastar

Old technology has a way of lingering on, particularly at Chrysler headquarters in Auburn Hills. So while the Pentastar V6 has replaced the older engine architecture in just about every application, it still soldiered on in some export markets. But the introduction of a new 3.0-liter Pentastar V6, produced in Michigan and meant only for the Chinese market, has put the final nail in the old engine's coffin.
Fitted into the 2014 Jeep Grand Cherokee and Jeep Wrangler just introduced to China at the Chengdu Motor Show, the downsized six uses the same architecture as the larger 3.6-liter Pentastar V6. But because of its 2,997cc capacity, it can be exported to China without the increased duty the 3.6-liter or even 3.2-liter Pentastar engines would incur. The 3.0-liter V6 develops 230 horsepower at 6,350 rpm and 210 pound-feet at 4,400 rpm.
Admittedly, it's unlikely, but even though the engine was said to be created solely to undercut tax thresholds in China and Europe, the 3.0-liter Pentastar has recently surfaced in rumors of an application here: as the boosted heart of a potential Cherokee SRT with anywhere from 375 to 410 hp.

FCA plotting larger Jeep Renegade, Fiat 500XL

The joint development of the new Jeep Renegade and Fiat 500X goes to show what the combined efforts of the Fiat Chrysler Automobiles group can yield. But don't expect the Italian-American automaker to stop there. According to Autocar, the company is planning to base another pair of larger SUVs on the same platform. The Jeep version would take the place of the previous Compass and Patriot, slotting in between the Renegade and Cherokee. Meanwhile, the Fiat version would further bolster the Cinquecento lineup to sit alongside the 500 hatchback, 500L minivan and 500X crossover. Details remain few and far between at the moment, but they wouldn't be the extent of the growth plans for either brand. Jeep is reportedly zeroing in on a decision on the long-rumored sub-Renegade model, while also preparing to expand up-market with the return of the Grand Wagoneer. Fiat is reportedly abandoning the prospect of offering a full model line as it once did. While the 500 range will continue to form a vital part of the brand's business, it's also tipped to be going after the no-frills, bare-bones market dominated by Renault's Dacia brand. To that end, it would seek to build upon the Panda by offering a larger, but still low-cost hatchback to rival the Ford Focus and VW Golf, and succeed the discontinued Fiat Bravo, but based on the 500L's platform and built in Turkey to keep costs down. This second pillar of the Fiat brand wouldn't likely be offered in the US, however, where we'd expect the 500 line to continue representing the Italian automaker. Related Video: