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Watch this 840-hp Jeep Grand Cherokee SRT8 walk away from GT-Rs and M3s

This last-generation Jeep Grand Cherokee SRT8 does things that SUVs just shouldn't be able to do, like win drag races against tuned Nissan GT-R and BMW M3 coupes. Granted, the owner isn't coming into this fight with a stock Jeep – far from it. In addition to twin turbos whistling away, he says the engine is a 449-cubic-inch V8, which is nearly 7.4 liters of displacement. As it runs here, the driver claims that the turbos are pumping out around 14 psi of boost to give an estimated 840 horsepower. What's more, he further maintains the powertrain could reach around 1,200 hp with things fully cranked up. Even somewhat dialed back, this Jeep is ready to take on a breadth of formidable challengers, including a couple of Chevrolet Corvette models and a Lamborghini Aventador. Check out the video to see how this menacing Grand Cherokee fares in a day at the races.

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 Chief and Wrangler Red Rock Responder teased ahead of Easter Jeep Safari

Jeep is being coy about it's lineup for the 2015 Moab Easter Jeep Safari, releasing just a pair of shots and an exceptionally brief press release on two of the seven concepts coming to the desert later this month. So, what can we glean from the limited assets that have been given to us? Well, as we said, we know Jeep is bringing seven vehicles to its big festival. We also know the names of two vehicles, shown above – there's the Chief and the Wrangler Red Rock Responder. Which is which? A fair question. We're betting the second image is the Wrangler-based Red Rock Responder. As for the Chief, well, we've absolutely no idea what to expect there. Jeep's Moab concepts generally include the model name on which their based – see the Grand Cherokee Trail Warrior and Cherokee Dakar from last year, or even the Wrangler Red Rock Responder, mentioned above. There's no such moniker on the Chief. As for the Chief's illustrated teaser image, as we said, it doesn't reveal much. The body is angular, and quite Jeep like, with squared-off wheel arches and decidedly old-school taillights. Beyond that, though, we don't have much to go on. Expect much more not just on the Chief and Red Rock Responder, but on all seven of the concepts Jeep is bringing to Moab. The party starts on March 28 and runs until April 5. Be sure to check back then for full coverage. Related Video: