How much horsepower does a 6.2 L V8 supercharger have?

There isn’t a single horsepower number, because a supercharger doesn’t “have” horsepower—engines do. A supercharged 6.2‑liter V8 can produce anywhere from roughly 556 hp to 1,025 hp in factory form, depending on the specific engine, vehicle, tune, and fuel. Common examples include General Motors’ LT4 at 650–682 hp and Stellantis’ 6.2L HEMI Hellcat family at 702–717 hp, with high-output versions reaching 797–807 hp and the Challenger SRT Demon 170 rated at up to 1,025 hp on E85.

Why there’s no single number

The phrase “6.2 L V8 supercharger” usually refers to a 6.2‑liter V8 engine equipped with a supercharger. Output varies by supercharger size and boost, intercooling, engine internals, intake and exhaust, calibration, and even the fuel used (octane or ethanol content). Manufacturers also rate horsepower at the crank using standards like SAE J1349; wheel horsepower will be lower due to drivetrain losses.

Notable factory supercharged 6.2‑liter V8s (General Motors)

The following list highlights major GM 6.2L supercharged V8 engines, their factory horsepower ratings, and typical applications to illustrate how outputs vary across models and years.

• LS9 — 638 hp: 2009–2013 Chevrolet Corvette ZR1 (C6).
• LSA — 556 hp: 2009–2015 Cadillac CTS‑V (Gen 2).
• LSA — 580 hp: 2012–2015 Chevrolet Camaro ZL1 (5th gen).
• LT4 — 640 hp: 2016–2019 Cadillac CTS‑V (Gen 3).
• LT4 — 650 hp: 2015–2019 Chevrolet Corvette Z06 (C7); 2017–2024 Chevrolet Camaro ZL1 (6th gen).
• LT4 — 668 hp: 2022–present Cadillac CT5‑V Blackwing.
• LT4 — 682 hp: 2023–present Cadillac Escalade‑V.
• LT5 — 755 hp: 2019 Chevrolet Corvette ZR1 (C7).

Across GM’s lineup, factory supercharged 6.2L V8s span roughly 556–755 hp, with the LT4 commonly around 650–682 hp depending on application, and the LT5 topping the range at 755 hp.

Notable factory supercharged 6.2‑liter V8s (Stellantis/Chrysler HEMI)

Stellantis’ 6.2L HEMI “Hellcat” family is widely known for high outputs. The list below shows key factory ratings across different models and trims.

• Hellcat V8 — 707 hp: 2015–2018 Dodge Challenger/Charger SRT Hellcat.
• Hellcat V8 — 717 hp: 2019–2023 Dodge Challenger/Charger SRT Hellcat (updated tune).
• Hellcat V8 — 710 hp: Dodge Durango SRT Hellcat (2021, 2023).
• Hellcat V8 — 707 hp: 2018–2021 Jeep Grand Cherokee Trackhawk.
• Hellcat V8 — 702 hp: 2021–2024 Ram 1500 TRX.
• Redeye — 797 hp: Dodge Challenger/Charger SRT Hellcat Redeye.
• Jailbreak/Super Stock — 807 hp: Dodge Challenger special trims.
• Demon (2018) — 808 hp on premium, 840 hp on 100‑octane race fuel.
• Demon 170 (2023) — 900 hp on E10, 1,025 hp on E85.

The HEMI lineup ranges from about 702–717 hp in mainstream models to 797–807 hp in higher trims, with special editions like the Demon reaching 840 hp (2018) and up to 1,025 hp on E85 in the 2023 Demon 170.

How to find the exact horsepower for your 6.2L supercharged V8

If you want the precise figure for a specific vehicle, these steps will help you identify the correct rating and avoid confusion from modifications or differing fuel assumptions.

1. Identify the engine code (e.g., LSA, LT4, LT5, Hellcat/Redeye/Demon) and model year.
2. Check the manufacturer’s spec sheet or window sticker for the SAE net horsepower rating.
3. Note the fuel requirement (premium octane, race fuel, or E10/E85), as it can change output.
4. Confirm whether the figure is factory crank horsepower (SAE J1349) or aftermarket dyno wheel horsepower.
5. Account for any aftermarket pulleys, tunes, intake/exhaust, or ethanol tunes that may raise power.

Following these steps will give you a defensible, model-correct number and clarify whether you’re comparing stock ratings or modified results.

Key factors that change output

Even among engines with the same displacement, small hardware and calibration differences can produce large horsepower swings. The items below summarize the main levers.

• Boost and supercharger displacement (e.g., 1.9L vs. 2.65L blowers).
• Intercooling efficiency and intake air temperature control.
• Fuel type and quality (octane or ethanol content).
• ECU calibration, timing, and knock strategy.
• Exhaust and intake restrictions, packaging, and emissions hardware.
• Ambient conditions (altitude, temperature) and testing standards.

These factors explain why two 6.2L supercharged engines can differ by hundreds of horsepower while sharing the same displacement.

Summary

There is no single horsepower figure for a “6.2 L V8 supercharger.” In factory applications, supercharged 6.2‑liter V8s typically range from about 556 hp (early GM LSA) to 1,025 hp (Dodge Challenger SRT Demon 170 on E85), with many mainstream models clustering between 650 and 717 hp. To get an exact number, identify the engine code, model year, and fuel assumptions tied to that specific vehicle.

How much HP does a 6.2 L supercharged V8 have?

The factory compression ratio on the 6.2L HEMI engine is a healthy 9.5:1 and the horsepower ratings are 707-717 @ 6,000 RPM (SRT Hellcat); 797 @ 6,300 RPM (SRT Hellcat Redeye); 807 @ 6,400 RPM (Super Stock); and 808-840 @ 6,300 RPM (SRT Demon).

How much horsepower does a supercharger add to a 6.2 L V8?

A supercharger can add a significant amount of horsepower to a 6.2L V8, with gains ranging from 120+ horsepower for basic kits like the Magnuson TVS1900 to over 230+ horsepower for high-performance systems like the Whipple, increasing the engine’s output to approximately 650 horsepower or more. The final horsepower increase depends on the specific supercharger model, boost pressure, and supporting modifications. 
Examples of Supercharger Additions:

• Magnuson Superchargers: Opens in new tabA TVS1900 kit can add around 110-120 horsepower and 100-120 lb-ft of torque at the rear wheels. 
• Whipple Superchargers: Opens in new tabA 3.0L Whipple supercharger system can raise the stock 420-horsepower 6.2L engine to approximately 650 horsepower with 7-8 lbs of boost. 
• Hennessey Performance: Opens in new tabTheir “GOLIATH 650” upgrade adds a supercharger to GM’s 6.2L V8, resulting in 650 bhp and a 55% increase in horsepower over stock. 

Factors Influencing Horsepower Gains:

• Supercharger Type: Positive displacement superchargers, like Whipple’s twin-screw systems, offer high volumetric efficiency and significant power potential, according to Whipple Superchargers. 
• Boost Pressure: Higher boost levels, such as 7-8 lbs from a Whipple system, lead to greater power increases. 
• Supporting Modifications: To reach higher power levels and ensure reliability, supporting modifications like headers, high-flow fuel pumps, and upgraded high-pressure fuel pumps (HPFPs) are often necessary. 
• Drivetrain and Tuning: The final measured horsepower can vary, with factors like wheel and tire size impacting rear-wheel horsepower (RWHHP). A professional tune is also critical to optimize the engine’s performance and reliability. 

How much HP can you get out of a 6.2 LS?

You can get anywhere from 400 to 650+ horsepower out of a 6.2L LS engine, depending on the specific model (e.g., LS3, L92, LS9) and the extent of modifications. A stock LS3 typically produces around 430 hp, while the supercharged LS9 is factory-rated at 638 hp. With aftermarket parts like a different camshaft, upgraded cylinder heads, improved headers, and a custom tune, it’s possible to significantly increase power, with some setups reaching over 500 hp or even much higher under boost. 
Stock Horsepower by Engine
The 6.2L LS family has several versions with different stock power outputs: 

• LS3: Around 430 hp (common in performance vehicles)
• L99: Around 400 hp (often used in trucks and SUVs)
• L92: Around 403 hp (also found in trucks and SUVs)
• LS9: A supercharged version producing 638 hp

Modifications for More Power
To exceed the stock power, modifications can be made: 

• Camshaft: Upgrading to an aftermarket camshaft is a common way to add significant power, with some swaps increasing output by over 100 hp. 
• Cylinder Heads: Modifying or replacing the cylinder heads can drastically improve airflow and support higher horsepower. 
• Intake and Headers: A high-flow intake manifold and aftermarket headers improve the engine’s ability to breathe, complementing the other upgrades. 
• Tuning: A custom tune for the engine’s computer can optimize fuel and ignition curves, unlocking more power from the engine’s components. 
• Forced Induction: Adding a supercharger or turbocharger can dramatically increase horsepower, with some setups capable of handling over 1,000 hp with the right internal upgrades. 

How much horsepower does a 6.2 L Whipple supercharger have?

685HP
The 6.2L reaches up to 685HP and 655 FT-LB TRQ with just 7psi of boost, it stands as the undisputed leader in positive displacement supercharging, offering unmatched performance.