How much horsepower does a Dodge Demon have?
The Dodge Challenger SRT Demon is officially rated at 840 horsepower. This figure refers to the engine’s crank horsepower when fueled with high-octane gasoline. On the street, real-world numbers can vary based on fuel, tuning, and drivetrain setup, but Dodge’s official rating remains the benchmark for this model.
To understand what that number means, it helps to know the car’s setup and how horsepower is measured. The Demon uses a 6.2-liter Hemi V8 paired with a 2.7-liter supercharger to deliver its power, and the 840 hp rating is tied to specific fuel and testing conditions. The Demon is a limited-production, drag-oriented machine with features that maximize acceleration, and as such, its horsepower figures are part of a broader performance package that includes torque, launch control, and track-ready components. Differences in octane, dyno methodology, and drivetrain losses all influence the actual displayed horsepower on a given test or in daily driving.
Official horsepower figures
Here are the key official figures Dodge publishes for the Demon’s horsepower and related torque.
- Crank horsepower: 840 hp (626 kW) from the 6.2-liter Hemi V8 with a 2.7-liter supercharger.
- Torque: 770 lb-ft (1,044 Nm).
- Fuel specification: 93-octane gasoline is used for the 840 hp rating; higher-octane or race fuels can affect output in different testing scenarios.
The above numbers represent the manufacturer’s published specification for the Demon’s baseline factory configuration. In real-world testing or with race fuel, some observers report higher or differently measured results, but Dodge maintains 840 hp as the official rating for standard tune and octane conditions.
Understanding horsepower measurements
Horsepower can be reported in several ways, which can cause confusion when comparing cars. The Demon’s official figure is a crank (engine) horsepower rating, not wheel horsepower, which is what you’d measure at the wheels after drivetrain losses.
Crank horsepower vs wheel horsepower
Crank horsepower is the engine’s output before losses in the transmission, driveshaft, differential, and tires. Wheel horsepower is typically lower because some energy is lost as heat and friction as power travels from the engine to the road. For a high-performance car like the Demon, drivetrain losses can be substantial, so wheel horsepower may be notably less than the 840 hp rating, depending on testing conditions and equipment used.
Effect of octane fuel and race gas
The Demon’s 840 hp figure is tied to 93-octane gasoline in Dodge’s official testing. Using higher-octane fuels or race fuel can alter output on a given dyno, with race fuel sometimes yielding higher peak numbers in controlled tests. Dodge does not publish a separate official rating for race fuel, so real-world results with non-standard fuels vary by test and tuning.
Practical takeaways for enthusiasts
What this means for performance enthusiasts is that the Demon’s headline horsepower is a crank rating that establishes its place in the power hierarchy among production muscle cars. On actual road or track conditions, acceleration and quarter-mile times are influenced by tire choice, surface quality, atmospheric conditions, and how the car is prepared for drag racing.
Summary
The Dodge Challenger SRT Demon is officially rated at 840 horsepower and 770 lb-ft of torque on 93-octane fuel. This crank horsepower rating reflects the engine’s output under specific testing conditions and is not a guaranteed wheel horsepower figure. Real-world numbers can vary with fuel type, tuning, and drivetrain factors, but the Demon remains one of the most potent production muscle cars in terms of advertised power. For enthusiasts, the key takeaway is that the Demon’s horsepower figure serves as a benchmark for its drag-focused performance and exceptional acceleration capabilities.
Is Demon 170 faster than Bugatti?
Is the Dodge Challenger SRT® Demon 170 faster than a Bugatti? When acceleration from 0 to 60 mph, the Dodge Challenger SRT® Demon 170 is faster than a Buggati.
How fast is a Dodge Demon 0 to 60?
The 2023 Dodge Challenger SRT Demon 170 has a 0-60 mph time of 1.66 seconds under specific conditions, such as on a prepped drag strip with the correct fuel (E85) and tire preparation. This time is the quickest for a production car on a prepped surface and requires more driving skill than an all-wheel drive electric car.
This video shows the Dodge Demon 170's drag race performance: 56sDemonologyYouTube · Mar 6, 2024
- Time: 1.66 seconds, which is a production car record on a prepped surface.
- Conditions: This time is not achievable on a regular road and requires a specialized drag surface, proper tire burnout, and E85 fuel.
- Driver Skill: Achieving this time requires more driver skill compared to an all-wheel drive vehicle.
- Real-world estimate: Some sources estimate the actual 0-60 mph time is closer to 1.79–1.91 seconds when accounting for roll-out, which is not included in the 1.66-second figure.
Which is faster, Hellcat or Demon?
The Dodge Demon is faster than the Hellcat, especially in acceleration, due to its higher horsepower, more aggressive drag-racing-focused features like a TransBrake, and a drag-tuned suspension. The Demon can accelerate from 000 to 606060 mph in as little as 1.661.661.66 to 2.32.32.3 seconds, while the Hellcat takes just over 3.53.53.5 seconds.
You can watch this video to see a drag race between the Demon and Hellcat: 56sSpeedLabs // MotorEnvyYouTube · Mar 28, 2019
Key performance differences
- 000 to 606060 mph: The Demon is significantly faster, with times around 1.661.661.66 to 2.32.32.3 seconds compared to the Hellcat's 3.53.53.5 to 3.73.73.7 seconds.
- Horsepower: The Demon produces up to 102510251025 horsepower on race fuel, while the Hellcat has around 707707707 horsepower.
- Quarter-mile time: The Demon has a much quicker quarter-mile time, with the 2018 model running it in 9.659.659.65 seconds and the 2024 model in 8.618.618.61 seconds, compared to the Hellcat's 11.711.711.7 seconds.
- Top Speed: The Demon can reach a higher top speed, with the 2018 model hitting 211211211 mph, while the Hellcat tops out around 203203203 mph.
- Purpose: The Demon was built specifically for drag racing and includes features like a TransBrake, drag radials, and a drag-tuned suspension for optimal launches, whereas the Hellcat is designed more as a high-performance daily driver.
What's faster, GT500 or Demon?
The demon 170 is literally the fastest street legal car (from factory) for 0-60. It can hit it in under 1.7 seconds. The most recent GT500 0-60 is low 3s iirc. Oh it's lost plenty.
