2012 Dodge Challenger Srt8 Hemi 392 6-speed Manual on 2040-cars

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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.

2015 Dodge Challenger gets 6.4L 485-HP V8 Scat Pack

While it's not seeing the drastic facelift of its brother, the Charger, at the 2014 New York Auto Show, the 2015 Challenger is packing some upgrades of its own. It wears even more retro-inspired styling cues, and there are new 6.4-liter Scat Pack and Shaker trims.
If you thought the Challenger looked retro before, Dodge is taking things even farther with inspiration for the refresh coming from the iconic 1971 model. Up front, it has a new split grille, a larger power bulge in the hood and projector fog lights. At the rear, the classic inspiration continues with split LED taillights with Gloss Black trim, and a rear valance panel redesigned to make the 2015 model look wider and lower.
The '71 motif is carried inside as well with a high-sill center console and aluminum gauge bezels. There's still more than a touch of modernity, with an available 8.4-inch Uconnect infotainment system and 7-inch customizable display between the retro-inspired speedometer and tachometer. For better safety, the Challenger is also now available with forward collision warning, adaptive cruise control, blind-spot monitoring and rear cross path detection. Stability control and electric power steering are standard across all models too.

2015 Dodge Viper getting small increase in power

The Viper is used to being the most powerful car in the Dodge and SRT stables, but the arrival of the 2015 Dodge Challenger SRT Hellcat means that's no longer the case. The serpentine supercar is, however, reportedly getting a small boost in output for 2015, amounting to all of five horsepower.
The increase was uncovered by Road & Track courtesy of the SAE J1349 certification process to which Detroit's Big Three automakers submit themselves and which reports the Viper's output at 645 hp instead of the 640 it was rated at until now. There are a hundred factors that could have contributed to the relatively mild boost in output (best guess? nothing at all changed...), but we doubt anyone's going to complain about some extra horses under the hood.
The five-horsepower boost brings the Viper that much closer to the 650-hp Chevy Corvette Z06, not to mention the 707-hp Hellcat, but the Viper's impressive power-to-weight ratio ought to mean it'll have little problem keeping up in a straight line - which is just one of the reasons why Chrysler won't shoe-horn the Hellcat into the Viper: as R&T points out, the supercharged engine is too heavy and the blower makes it too tall to fit in the Viper's engine bay.