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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.

Submit your questions for Autoblog Podcast #317 LIVE!

We record Autoblog Podcast #317 tonight, and you can drop us your questions and comments regarding the rest of the week's news via our Q&A module below. Subscribe to the Autoblog Podcast in iTunes if you haven't already done so, and if you want to take it all in live, tune in to our UStream (audio only) channel at 10:00 PM Eastern tonight.
Discussion Topics for Autoblog Podcast Episode #317
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2020 Dodge Challenger Review & Buying Guide | The most muscular muscle car

Despite going more than a decade without a complete redesign, the Dodge Challenger is alive and well, and still worth your consideration. Primarily, it offers more of a classic muscle car experience focused on straight-line performance and comfort that its rivals from Ford and Chevy that skew closer to sports car dynamics. The Challenger has the brash, broad-shouldered design to match that muscle car feel, too. And its big body brings more space and practicality than the competition. The 2020 Dodge Challenger also has a few unique bragging points. It's the only one of the modern pony cars to offer all-wheel-drive, which is a boon to people living in snowy parts of the country. And the Hellcat Redeye is still the most powerful pony car on the market with a whopping 797 horsepower from its supercharged 6.2-liter V8. Of course, there is a multitude of other Challenger models beyond those two examples, though, with many customization options from colors to wheels and trim. We think pretty highly of them all, proving that just because something is getting on in years doesn't mean it's any less relevant.  What's new for 2020? The 2020 Dodge Challenger brings a small number of updates. There are new wheel designs for every trim except the base rear-drive SXT. Three new colors are available with typically excellent Mopar names: Hellraisin, Sinamon Stick and Frostbite. Dodge has also made some welcome efforts to spruce up the interior with stitched dash and door panels on leather-equipped Challengers, carbon fiber trim and faux suede options for V8-powered cars and caramel-colored Alcantara for the GT, R/T and R/T Scat Pack trims.   What's the interior and in-car technology like? The Challenger's interior certainly isn't as characterful and flamboyant as its exterior would suggest. The Mustang and Camaro are more interesting and distinctive inside. Still, there are some interesting design flourishes that spruce things up, from the base trim's standard houndstooth cloth to the two-tone leather choices available as options. Besides, we're not sure how flamboyant you need the interior to be in a car available in electric orange, blue, green and purple paint colors. Furthermore, what the Challenger interior may lack in visual pizzazz, it makes up for with space (see below) and technology. A 7-inch touchscreen is standard, but all trim levels have an 8.4-inch version available as an option or standard.