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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.

2021 Ram 1500 adds Limited Longhorn 10th Anniversary Edition, new tech

The Ram 1500 is getting a handful of updates for 2021, including handy new tech, updated convenience features, and a new Limited Longhorn 10th Anniversary Edition with unique trim elements. We heard hints about the Limited Longhorn earlier in August, when it was reported that it might replace the Laramie Longhorn model in the Ram 1500 lineup. Now we know that it's an equipment package that bundles unique door bolsters, seat insert, trim bezels, center stack surround, speaker grilles, berber carpet and a metal pedal kit with Longhorn 10th Anniversary Edition badges inside and out.  On the tech front, the Ram 1500 gets two pretty swanky new options. The first is a new HUD, which is a first for the 1500. As with the rest of the truck, Ram's engineers decided to go big rather than go home, delivering a full-color display that can display five unique elements and be customized via the in-dash Uconnect infotainment center. Drivers can choose between lane departure and lane keeping indicators, adaptive cruise control status, navigation directions, current speed, current gear and posted speed limits.  The second new piece of solid tech is a digital rearview mirror with a 9.2-inch LCD display. Similar to that found in GM's current half-ton lineup, it can be switched off in favor of an old-fashioned mirror if drivers prefer that perspective to the rear-mounted camera feed.  Ram is also shuffling some options around between trim levels, adding and updating some safety tech, and offering some other new features for the first time, like reverse steering control for the Trailer package. A new snow plow prep option with a 220-amp alternator is also available.  Related Video:

Autoblog Podcast #523 | BMWs, Trackhawk and Mazda's new engine technology

On this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Associate Editor Joel Stocksdale. We discuss a couple of BMWs, the upcoming BMW X7 three-row SUV and our short-term BMW M760i with a turbocharged, 600-horsepower V12. We also cover the week's news, including Mazda's nifty engine technology it will roll out in the next few years, as well as pricing on the new Jeep Grand Cherokee Trackhawk. The rundown is below. Remember, if you have a car-related question you'd like us to answer or you want buying advice of your very own, send a message or a voice memo to podcast@autoblog.com. (If you record audio of a question with your phone and get it to us, you could hear your very own voice on the podcast. Neat, right?) And if you have other questions or comments, please send those too. Autoblog Podcast #523The video meant to be presented here is no longer available. Sorry for the inconvenience.Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Topics and stories we mention Rundown BMW X7 Spy Shots Volkswagen Passat GT Mazda's future engine technology Jeep Grand Cherokee Trackhawk Pricing BMW M760i driving Ram 2500 driving Spend My Money Feedback Email – Podcast at Autoblog dot com Review the show on iTunes