It might be slightly shorter in length due to two less cylinders, but it's tall and wide enough that it wouldn't even fit easily under the Viper's gargantuan hood.That being said, the Hellcat makes more power and far more low rpm torque thanks to the fat torque curve of a blown V8.

Not to mention they are different materials.From what I've heard, the Hellcat motor is over 200lb heavier than the Viper V10 thanks to being a supercharged iron block. Sign up to get the latest performance and luxury automotive news, delivered to your inbox daily! And to casual enthusiasts, it would make sense that car might be the Viper.But as SRT powertrain director Chris Cowland told us this past week, that’s simply not going to happen -- not ever, within the current generation of the Viper.There are several critical reasons, really, and they all come back to the dimensions of the Hemi.Because of the HEMI’s tall cylinder heads, there’s simply no way that SRT engineers could package the Apache or its new 6.2-liter supercharged variant under the hood of the Viper, Cowland told us.

© 2020 MH Sub I, LLC. Also the MPG is a function of engine, gearing, and vehicle dynamics so you can't really blame or praise an engine solely for fuel economy.Also a Viper engine comes in a car that doesn't weigh more than the Moon. Hellcat has more HP, more Torque, it weights less, it consumes less fuel. The 707-horsepower, 6.2-liter supercharged V-8 in the 2015 Dodge Challenger SRT Hellcat seems a natural to go under the hood of a vehicle that could better handle all that power up to 200 mph and above. I understand that I can unsubscribe at any time. It seems like Hellcat engine beats Viper engine in every category.

All Rights Reserved. For now, Cowland deflected a reply on that possibility.So for now, there will be a Hellcat and there will be a Viper. It will stand up better lap after lap on a race track and not have to worry about heat soak.The Hellcat engine does not weigh less. Interestingly, the Viper and SRT Hellcat do already share one major powertrain component: their manual transmission. It would require punching up above the hood, or heavily modifying the hoodline (it’s not just close, it would be several inches) to the point at which it would adversely affect the Viper’s aerodynamics.2015 Dodge Challenger - First Drive, Portland OR, July 2014The exhaust manifold and supercharger hardware also add to the dimensional problem, Cowland said, and given that the supercharger runs on a separate cooling loop, that would present separate issues.“Somebody will do it,” mused Cowland. Although Viper engine does not have forced induction so it's simpler- less parts to break. Not that it can't be driven normally, but with just a blip of the throttle it will try to bite you.This is really only true of the older models which were sold without any driving assists like traction control.

Hell No: Why SRT Hellcat V-8 Won't Be Giving Viper Extra BiteHell No: Why SRT Hellcat V-8 Won't Be Giving Viper Extra Bite You need an intercooler, which requires a well designed cooling channel in the hood, additional piping, engine designed for boost which means heavier block, and so on. Generally Turbo engines were the ones with the big shove late in the revs.The supercharger may be even more linear than the N/A engine because typically big power N/A engines tend to be a little peaky too. Still, it'd do far better under extended hard use without the amount of heat soak seen in supercharged engines, and it responds pretty well to gaining several hundred hp through nitrous or forced induction if you have the money for it.FYI Hellcat is a supercharged 6.2, the 6.4 is the Naturally aspirated SRT motor.The Viper engine will be more reliable, everything else equal. … Both are heavy. I drives just like a normal car. The newer ones can be driven moderately however... much like the challenger.New comments cannot be posted and votes cannot be cast/r/Cars is the largest automotive enthusiast community on the Internet. Stock photography by Sign up to get the latest performance and luxury automotive news, delivered to your inbox daily!I agree to receive emails from Motor Authority. They come "on cam" around the same time their headers hit their stride and make more power up top. Am I missing something ?Actually superchargers are known for providing great linear power because their boost builds continuously as the revs rise.

Hellcat has more HP, more Torque, it weights less, it consumes less fuel. (If you can call a Hellcat normal)The Viper actively tries to kill you at every chance it gets. It seems like Hellcat engine beats Viper engine in every category. I understand that I can unsubscribe at any time. I agree to receive emails from Motor Authority. For lap times, that money is better used on aero of the car, suspension, tires, brakes.For the low-mid range application however, superchargers and turbochargers are the way to go because you want to be able to stomp on the gas in any gear and the car pull, because these cars spend most of their time on the street being driven in low-mid range RPMS.The Hellcat can be driven normally as long is you stay under 3000 RPM.

2020 Dodge Challenger SRT Hellcat. You stop paying attention for half a second and you're out of control.

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