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. 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.

Personally i think the viper doesn't sound great, like a V6 motorNaturally aspirated (Viper SRT) vs Supercharged (Hellcat)NA is better for the track and more importantly the hellcat motor and oiling system is larger in size and hangs out to low for a viper and to high to clear the hood.NA engines are all about revs and airflow, while forced induction engines are about increasing torque.For a car like the Viper, the only part you care about is the top end of the RPM range - because realistically, when you take it around the track, you will downshift and up-shift to keep the revs there to keep the car in lower gear to maximize torque to the ground. By using our Services or clicking I agree, you agree to our use of cookies. Hellcat has more HP, more Torque, it weights less, it consumes less fuel. The 2015 Dodge Viper is powered by a naturally aspirated V10 engine offering 645 horsepower and 600lb-ft of torque while the 2015 Dodge Challenger SRT Hellcat is … In the Challenger SRT Hellcat it gets an additional external oil cooler, however.Of course, one engine bay that might fit the Hellcat’s engine is that of the Charger four-door. We serve as Reddit's central hub for vehicle-related discussion including industry news, reviews, projects, videos, DIY guides, art, advice, stories, and more.Press J to jump to the feed. 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. I drives just like a normal car. Viper 8.4L vs Hellcat 6.4L engine What are advantages of Viper SRT 8.4L engine compared to Hellcat 6.4L engine ? 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. 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. (If you can call a Hellcat normal)The Viper actively tries to kill you at every chance it gets.

The high revs generate a good vaccum force and the intake and exhaust is designed to keep the gasses flow as efficiently as possible, so you get the power.That isn't to say you can't do that with a carefull designed supercharged engine, but its more complexity. 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. And with either, there’s definitely no lack of performance burn and bite. 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.

Although Viper engine does not have forced induction so it's simpler- less parts to break. However by today companies can definitely make an engine with 650hp and a broad curve. 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. 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. $58,995. It seems like Hellcat engine beats Viper engine in every category. Hellcat has more HP, more Torque, it weights less, it consumes less fuel. *Also, people who buy 650+hp cars probably aren't too concerned with practicality or economy.not sure if that's a bonus for a lot of people.


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