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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.

The last time Dodge recycled the Demon name, it was for a Miata fighter

We and the rest of the automotive world are eagerly awaiting the reveal of the Dodge Challenger Demon. And why wouldn't we be? It's going to be a Hellcat, but with less weight, bigger fenders, more performance, and more Vin Diesel. This isn't the first time we've been excited about a Demon from Dodge, though. Ten years ago, Dodge had another demonic car, but it was very different from the new one. The Demon of 2007 was a lithe little roadster that looked primed and ready to take on the Miata, as well as the now-departed Solstice and Sky twins. The Demon was just under an inch shorter than the MX-5 and the Solstice, and it packed a 172 horsepower 2.4-liter four-cylinder that fell right between the Miata's 170 and the Solstice's 177 outputs. Dodge's estimated the curb weight, which for a concept is largely theoretical, also slotted between the two cars at 2600 pounds. That was about 150 more than the Mazda, and about 200 less than the Pontiac. The pitch perfect specifications were presented in a crisp two-seat roadster wrapper. In many ways, it looked like a baby Viper, with a menacing crosshair grille, slanted headlights, and fat rear fenders. The Demon's line's were brutally simple and geometric, too. They didn't seem far removed from the first-generation Audi TT. The interior was also plain and simple. The key highlights were a horizontal aluminum accent that ran the width of the dash, echoed by an aluminum-covered center console. The instrument cluster was uncluttered, with just four gauges, and the only controls were some climate knobs, a double-DIN head unit, and a six-speed manual. It turns out that the 2007 Demon didn't drive very well, though. You see, we actually drove this concept back in the day, and like many concepts, it still had a long way to go to be production ready. The gearbox would grind, the ride quality was terrible. However, the interior was roomy, and the engine sounded suitably grumbly, if a bit coarse. At the time, we said Dodge should absolutely build the little roadster. In retrospect, the company probably made the right decision not to invest in the Demon. The small rear drive sports car segment was, and still is, an extremely niche market. It would have been a big investment for little return, something FCA today is trying to avoid. This is all before taking into account the fact that the recession was just around the corner. In the end, we can't be too sad though.

All hail the Hellephant, Mopar's 1,000-horsepower crate engine

It's shocking to say this, but the all-powerful Dodge Demon looks weak now that Mopar has unleashed the Hellephant. This crate motor makes 1,000 horsepower and 950 pound-feet of torque, and its name is a combination of the nickname for the old 426-cubic-inch Hemi V8 and, obviously, the Hellcat. This monster is a 426-cubic-inch version of the current third-generation Hemi V8 topped by a supercharger similar to what the Hellcat line packs. Everything is cranked up to — or perhaps, past — 11. The engine block is made of aluminum and weighs 100 pounds less than the equivalent iron block. All of the internals are forged. The stroke and bore have been increased. The supercharger produces 15 pounds of boost and displaces 3 liters; more than the 2.7-liter blower on the Demon and the 2.4-liter blower on the Hellcat. And as big and powerful as it is, it will still rev to 7,000 rpm. It's a thoroughly monstrous motor, but shockingly, it won't be that difficult to live with. For one thing, Mopar will offer a complete kit to get the engine up and running, including an engine computer, wiring harness and drive-by-wire throttle. It also runs on 93-octane pump gas. That's especially amazing considering the Demon engine "only" makes 840 horsepower, and that's on race gas with 100+ octane fuel. It also has us wondering what the Hellephant could make on racing fuel. The Mopar folks did say that there's room to add more power. Pricing wasn't announced for the Hellephant engine. The Hellcat crate engine retails at $19,350 directly from Mopar, so it's safe to assume that the Hellephant will go for more. The installation kit with the computer and harness will be an extra charge of likely over $2,000, based on the Hellcat kit. The engine and the kit will be available in the first quarter of 2019. Related Video: Featured Gallery Hellephant Crate Engine SEMA Show Chrysler Dodge Jeep RAM Performance dodge demon hellephant