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500+ hp Stellantis 'Hurricane' I6 previews a world without Hemis

After years of rumored development, Stellantis has revealed its new six-cylinder engine family. The 3.0-liter, twin-turbocharged "Hurricane" I6 will offer V8 power, forced induction torque and six-cylinder efficiency in a package designed to fit into any of the company's North American rear-wheel-drive platforms.  What is "V8 power," exactly? Well, in standard output guise, the new I6 cranks out more than 400 horsepower (the specific figure will vary by application) and 450 pound-feet of torque, while the high-output variant is good for more than 500 horses and 475 lb-ft. The final figures will be dependent on the application. We'll save you a little legwork: In current Ram, Jeep and Dodge products, the 5.7-liter Hemi tops out at about 395 hp and 410 lb-ft, give or take, and the 6.4-liter around 485 hp and 475 lb-ft.    This is a clean-sheet design that is only related to the company's turbocharged four-cylinder by some common measurements. The I6 is exclusively direct-injection (no hybrid/port-injection here) and the two I6 variants share 96 common parts, including the block and oil pan design. The differences are found in their internals, intake plumbing, valvetrain components and the turbochargers themselves. Stellantis is not yet ready to share specs or supplier info for the turbos but says announcements will come from its partners soon.  The standard-output I6 has a compression ratio of 10.4:1 and revs to 5,800 rpm. It will run on regular fuel, albeit with reduced performance; 91 octane is recommended for maximum output. The high-output variant has a compression ratio of 9.4:1 and will rev to 6,100 rpm. That one will require premium. The new I6's advantages go beyond basic power output. Every Hemi family engine currently in production is based on an iron block design, so they're heavy. The aluminum-block I6 shaves weight off the total engine package, even if some of that gets added back thanks to the turbos and their associated plumbing. The standard-output I6 weighs 430 pounds, Stellantis engineers told us; the high-output adds just another 11. Fully dressed 5.7-liter V8s are in the 550-560-pound ballpark, and 6.4-liters close in on 600 pounds.  You may be wondering, "Why a clean-sheet gasoline engine now, when the industry is moving toward battery-electrics?" A valid inquiry, and one Stellantis was prepared to address. While the company will be pivoting to electrification over the next decade, it won't be instantaneous.

NYIAS: 2017 Jeep Grand Cherokee Trailhawk, ooh-rah!

I was very happy to see Jeep offer a stand-alone, off-road-oriented model to the Grand Cherokee for 2017, the Trailhawk. This is not the first time for a GC Trailhawk, as they offered a limited run a few years ago to see if there might be a market for such a model. Looks like there is, as there are Trailhawk models for the Cherokee and Renegade, and now the Grand Cherokee as well. Just to be clear here, Jeep has always offered off-road ready packages (tow hooks, one inch more ground clearance, skid plates) for the Grand Cherokee and Cherokee in the past. They were called "Up Country," or more recently, "Off Road" groups. That was all well and good but, at least where I was living, almost impossible to find. Rarely would you ever find one so-equipped on dealer lots. If you ever saw one on the street, most likely the owner special-ordered it. Having said that, now that I'm living by the beach, I am seeing a few Up Country-equipped older Jeeps; not many, but more than I've seen in the past. As to the new Cherokee and Renegade Trailhawks; I'm seeing a bunch of them. It took a little while for the public to discover this trim level, but now I see them everywhere. Must be the orange tow hooks? Speaking of orange tow hooks... I'm not a big fan of them. Tow hooks for sure, orange ones, not so much; same with the matte black hood decal, not a fan. If I were ever to get a Trailhawk, it would be either dark gray or black, as that effectively hides the hood decal. So Jeep has packaged the Trailhawk as a premium model within each respective model line. While I fully understand the thinking, I do wish Jeep would also offer an entry-level off-road model, one with all the Trailhawk off-road goodness, but minus all the visual and luxury fluff. A lot of off-roaders don't want to pay, or can't pay top dollar for stuff they don't want or need. As to a name, how about "Trail," that being Trailhawk minus the "hawk;" or perhaps "Pioneer?" That's an old name from Cherokees of yesteryear. Back then the Pioneer was positioned as a mid-low level model. I think either name would work well for a back-to-basics-off-road-focused Cherokee and/or Renegade. Content it like the current entry-level Sport or mid-level Latitude models, but include the Trailhawk's off-road prowess. The Grand Cherokee should probably pass on that suggestion, as it would run counter to that model's high-end image. Related Video: Image Credit: Jeep Jeep open road

Going high-tech, the 4x4 way

Is It An Off-Road Adventure Or Just A Walk In The Park?
I remember having to get out and lock hubs and shift into neutral to engage low range.
Coming off press previews of the 2013 Land Rover Range Rover and the 2014 Jeep Grand Cherokee that involved some heavy-duty off-road rock climbing, I'm simply amazed at the capabilities that these vehicles possess. But even more impressive (or troubling depending on your perspective) is the relative ease with which you can operate these vehicles in seemingly impossible terrain.