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Dodge Viper to out-Hell the Hellcat with supercharged V10?

The Viper wouldn't be the Viper if it wasn't the most powerful model under the Chrysler umbrella. But with the arrival of the Hellcat engine in the Dodge Charger and Challenger, the Viper has fallen behind in the bragging rights department: where the new supercharged V8 produces 707 horsepower and 650 pound-feet of torque, the naturally aspirated V10 offers "only" 640 hp and 600 lb-ft - gargantuan output figures by almost any other standard, but crucially behind on the SRT power scale. Conner Avenue is going to have to do something about that.
Although the Hellcat's engine reportedly won't fit under the Viper's hood, SRT is now rumored to have another trick up its sleeve: supercharge the existing V10. According to the Pentastar performance enthusiasts at allpar.com, Chrysler has already taken delivery of the first such prototype engines so that it can begin the process of fitting it into an upgraded Viper.
The spooled ten-pot is tipped to produce around 800 hp and 650 lb-ft of torque. More than that and the Viper's drivetrain, chassis and bodywork would have to be substantially reworked. Though beefier transmissions are available, fitting them would reportedly set off a domino-game of changes required to handle the added torque. Which may be something Chrysler would be prepared to do for the next-generation model, but in the meantime, 800 hp could prove enough to put the Viper back atop the Mopar performance ladder where it belongs, and give it an edge against the new Corvette Z06 to rekindle sales.

Dodge Challenger spied exercising supercharged Hellcat Hemi V8

One of the prime complaints against the Dodge Challenger is that, even in SRT8 guise, its 470 horsepower is responsible for hauling over 4,200 pounds of vehicle. For comparison, the 420 hp in the Ford Mustang GT only has to deal with 3,618 lbs. Things only get worse from there, as the higher-performance variants of both the Mustang and the Chevrolet Camaro are far more powerful than an SRT8 without adding on much heft.
So what is Chrysler to do? The correct answer is add a whole lot more grunt to its hefty two-door and even the odds. That's where the all-new Hellcat engine comes into play. We reported on this engine in May, and suggested that the Hellcat, a supercharged powerplant based on a 6.4-liter V8, would easily generate 500 to 570 hp and could likely arrive boasting more than 600 ponies.
Chrysler's ace in its sleeve has now been spied testing, with a number of Hellcat-equipped Challengers running the potent new engine both in more urbanized areas and under the sun of Death Valley. The hoods on these testers have been raised to accommodate the engine, and that camouflage over the fascias of these prototypes is there to hide a larger air intake. We also note what appears to be a new split grille under wraps. As for power output, our spies are now suggesting a Viper-equalling 640 hp from the Hellcat-equipped cars.

Dodge Charger Hellcat hitting 60 in 2.9 seconds on drag radials?

The Dodge boys and their cousins from SRT have shoehorned the same 707-horsepower, 6.2-liter supercharged V8 into both the Dodge Challenger and Charger. The former being a two-door, it's lighter than the latter four-door sedan. So it would stand to reason that the Dodge Challenger SRT Hellcat would be the quicker of the two, right?
Only that's not necessarily proving to be the case. On stock rubber, yes, the coupe beats the sedan: Dodge quotes a 0-60 time of 3.7 seconds for the Charger SRT Hellcat and 3.5 for the Challenger. Same gap across the quarter-mile: 11 seconds flat for the Charger versus 10.8 seconds for the Challenger. But according to recent reports, the story changes when you put both on drag radials.
While visiting Chrysler HQ in Auburn Hills, MI, TorqueNews.com caught wind of performance figures for the Charger Hellcat on drag tires: 0-60 in a mind-blowing 2.9 seconds and a quarter-mile in just 10.7. The latter figure just barely pips the Hellcat-powered Challenger's NHRA-certified figure of 10.8, making the Charger not only the fastest sedan on the market, but also the fastest muscle car. What isn't immediately clear, however, is whether the drag radials in question have any tread on them and are street-legal, or if they're pure slicks confined to a closed strip.