What engine is in a Hellcat?

The Hellcat is powered by a supercharged 6.2-liter Hemi V8. This large, purpose-built engine is the centerpiece of Dodge’s Hellcat lineup, delivering extreme straight‑line performance in the Challenger SRT Hellcat and Charger SRT Hellcat. It relies on a factory supercharger to force air into the cylinders, enabling the high horsepower and torque that define the model.

The heart of the Hellcat: the 6.2-liter Hemi V8

At its core, the engine is a 6.2-liter V8 from Chrysler’s Hemi family, equipped with a high-output supercharger and intercooling to maximize power. It is mated to a robust eight-speed automatic transmission and a heavy-duty drivetrain designed to handle the torque and performance characteristics of the Hellcat line.

Power variants

Power figures vary by model year and trim. Here is a quick guide to the main engine variants within the Hellcat lineup.

• Challenger SRT Hellcat and Charger SRT Hellcat: 707 horsepower and 650 lb-ft of torque.


• Hellcat Redeye: 797 horsepower and 707 lb-ft of torque.


• Hellcat Jailbreak (limited-run package): up to about 807 horsepower, depending on calibration and fuel.

Note that horsepower is rated under controlled conditions with high-octane fuel; real-world results can vary with temperature, fuel quality, and upgrades.

Why this engine stands out

The 6.2-liter Hemi V8 in Hellcats is distinguished by its forced-induction setup, producing enormous torque the moment the throttle is pressed. This configuration enables rapid acceleration and a distinctive, booming exhaust note that has helped define the Hellcat era of Dodge performance.

Summary

The Hellcat’s engine is a supercharged 6.2-liter Hemi V8, delivering 707 hp in the standard Hellcat, 797 hp in the Redeye, and up to around 807 hp in limited Jailbreak variants. Paired with an eight-speed automatic and a heavy-duty drivetrain, it powers Dodge’s Challenger and Charger Hellcat models with extreme straight-line performance.

What engine is in a Scat Pack?

A Scat Pack is powered by a 6.4L HEMI V8 engine with 485 horsepower and 475 lb-ft of torque. For the all-new 2026 Dodge Charger internal combustion models, the Scat Pack is equipped with a new 3.0L twin-turbo inline-six "SIXPACK" engine, producing 550 horsepower and 531 lb-ft of torque.
 
Traditional V8 Scat Pack (2015-2024)

• Engine: 6.4-liter HEMI V8
• Horsepower: 485 hp
• Torque: 475 lb-ft
• Transmission: Either a six-speed manual (Challenger only) or an eight-speed automatic 

2026 Dodge Charger "SIXPACK" Scat Pack 

• Engine: 3.0-liter twin-turbo inline-six
• Horsepower: 550 hp
• Torque: 531 lb-ft
• Transmission: Eight-speed automatic
• Drivetrain: Standard all-wheel drive with an option for rear-wheel drive 

What engines do Hellcats use?

A Hellcat has a supercharged 6.2-liter HEMI V8 engine. This engine is the source of the Hellcat's high performance, with the base model producing 707 horsepower and 656 lb-ft of torque. More powerful versions, such as the Redeye, achieve up to 807 horsepower.
 

• Engine: Supercharged 6.2L HEMI V8
• Base model horsepower: 707 hp
• Torque: 656 lb-ft
• More powerful variants: Redeye models produce up to 807 hp

Is a SRT 392 faster than a Hellcat?

The Hellcat accelerates from 0 to 60 mph in 3.4 seconds and on through the quarter mile in 11.7 seconds at 117.3 mph. The last Durango 392 we tested needed (a still-quick) 4.6 seconds to hit 60 mph and 13.2 seconds to run the quarter mile at 103.5 mph.

What motor is in the demon?

The Dodge Demon uses a supercharged 6.2L HEMI V8 engine. The original 2018 Demon produces up to 840 horsepower, while the newer 2023 Demon 170 can generate 1,025 horsepower on E85 fuel.
 
You can watch this video to see a 7-liter stroker engine being built for a Dodge Demon 170: 53sEast Coast GarageYouTube · Mar 26, 2025

• Engine type: The Demon uses a 6.2-liter, supercharged HEMI V8 engine. 
• Power output:
  • The 2018 model produces up to 840 horsepower. 
  • The 2023 Demon 170 can produce 1,025 horsepower when running on E85 (85% ethanol) fuel, and 900 horsepower on premium unleaded gasoline. 
• Key components: The Demon 170 features a larger 3.0-liter supercharger with a 105mm throttle body, new driveline components, and an improved fuel system. 

This video discusses the 2023 Dodge Challenger Demon 170's engine, transmission, and overall driving experience: 55sRaiti's RidesYouTube · Mar 22, 2025