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Here's what it'll take to build a Jeep Grand Cherokee Hellcat

Let's get one thing straight: We want a 707-horsepower Grand Cherokee Hellcat to happen. Badly. The latest report from Motor Authority is encouraging; the bonkers SUV supposedly has a codename, Project K, and has been given the green light for production. Fingers crossed. You might be wondering why the Trackhawk isn't already a thing. Hellcat engines exist, SRT Grand Cherokees exist, so just combine the two, right? It's not quite that easy. Here, we outline what needs to happen, why it should be the quickest Hellcat vehicle out there, and why it won't come anywhere near 200 miles per hour. How To Build A Hellcat Jeep The first engineering problem is feeding the air-intensive beast that is the 6.2-liter supercharged V8. The first engineering problem is feeding the air-intensive beast that is the 6.2-liter supercharged Hellcat V8. Breathing is important on two counts: pulling in enough air for the combustion to put out 707 hp, and then cooling the various heat exchangers once the engine is up to temperature. Dodge did it with the Charger and Challenger, it can do it with the Jeep. This is one place where the Grand Cherokee's larger frontal area might be a boon, as it gives the engineers more surfaces through which to suck air. Once you generate the 707 horsepower and 650 pound-feet of torque, it has to get to the wheels somehow. Jeep's current SRT all-wheel-drive system will at least need some beefing up to handle the torque. It could require a more complete re-engineering. We at least know the ZF-supplied eight-speed auto, used in the Dodge Hellcat models, is up to the task. The Hellcat engine should fit in the Grand Cherokee, as it's about the same size as the 6.4-liter currently in SRT Jeeps, but the Hellcat is taller because of its supercharger. The hood may need to be raised or at least resculpted for clearance, as well as to address those cooling needs. Quicker Than Everything, But Not Faster 200 mph? We're skeptical, from both a physics standpoint and a legal one. A reminder of the quick/fast distinction: quick is acceleration, fast is road speed. The Jeep's all-wheel drive will help put the Hellcat engine's power to the ground in a more manageable way than the Charger and Challenger do through just the rear wheels. That means better acceleration times than the Dodges (11.0 seconds in the quarter-mile for the Charger Hellcat, 11.2 for its Challenger sibling).

Autoblog Minute: FCA issues Uconnect software update amid hacking fears

Carjacking has gone wireless, as automakers and Congress scramble for a solution after a disturbing video on Wired showed a pair of researchers controlling a Jeep Cherokee remotely. Autoblog's Adam Morath and David Gluckman report on this edition of Autoblog Minute. Show full video transcript text [00:00:00] Carjacking has gone wireless, as automakers and Congress scramble for a solution. I'm Adam Morath and this is your Autoblog Minute. Cars with wireless connections are susceptible to remote hacking, as demonstrated in a disturbing video on Wired.com. The segment showed two researchers remotely controlling a Jeep Cherokee, including running vehicle's the wipers, turning up the music, and ultimately shutting down [00:00:30] the Jeep while it was being driven on the highway by Wired senior writer Andy Greenberg. Washington took note. A press release issued from the desks of senators Ed Markey and Richard Blumenthal introduces legislation protecting drivers from auto security privacy risks. Fiat Chrysler, parent company of Jeep, has a solution for its customers. For more we go to Autoblog's David Gluckman. [GLUCKMAN INTERVIEW] Chrysler has worked with the Uconnect cellular provider Sprint to plug security holes on the carrier side. The vehicles themselves can't be updated wirelessly, so [00:01:00] the remaining changes require physical access. For that, customers have three options: One, download the Uconnect software update to a USB stick and install. Two, wait for FCA to send a USB stick with the latest software that they can install, or third, visit a dealer. Owners should do what they're most comfortable with. I made a video that walks through the whole process from download to install and it took about a half hour. [MORATH] David's full video tutorial of how to install the Uconnect fix can be seen on Autoblog. [00:01:30] It remains to be seen how the rest of the auto industry will respond to these security risks. For Autoblog, I'm Adam Morath. Related Video: Autoblog Minute is a short-form news video series reporting on all things automotive. Each segment offers a quick and clear picture of what's happening in the automotive industry from the perspective of Autoblog's expert editorial staff, auto executives, and industry professionals.

Jeep Renegade sales being held due to powertrain issue [UPDATE]

UPDATE: An unnamed FCA US source has clarified to Automotive News that while there is a software issue, it does not concern the transmission. The Jeep Renegade appears to be facing early software problems that are similar to the ones at the introduction of the Cherokee a few years ago. The issue is keeping the brand's latest compact crossover away from dealers until the situation can be resolved. The fault reportedly deals with the software controlling the Renegade's nine-speed automatic transmission. FCA CEO Sergio Marchionne briefly talked about what was happening in an interview with Automotive News. "I'm having a very bad engineering day," he said. "It's a combination of attributes of that vehicle that is making my life horrible." The company boss predicted at the longest it could take until mid-June to fix things. Through April, Jeep has sold 5,157 Renegades, including 4,214 of them in that month alone. Autoblog reached out to an FCA US spokesperson to learn more about the software problem, but the company had no comment. Getting the software right to control the nine-speed automatic plagued development of the Cherokee. The issues delayed the model's launch in 2013, and the company was still releasing improvements for some vehicles this year.