Unleashing the Full Potential of Your Challenger with the Edelbrock E-Force Supercharger

The Dodge Challenger has long been a symbol of American muscle, offering raw power and a classic silhouette that turns heads. But for owners who crave more than what the factory delivers, forced induction is the next logical step. Among the most trusted aftermarket supercharger kits is the Edelbrock E-Force Supercharger, engineered specifically for the Challenger’s HEMI engines. This article dives deep into real-world power gains, installation requirements, supporting modifications, and what you can expect when you bolt on one of these kits to your 5.7L, 6.4L, or 6.2L Hellcat-powered Challenger.

How a Roots-Type Supercharger Works

Before we talk numbers, it helps to understand the technology behind the Edelbrock E-Force kit. Unlike centrifugal superchargers (which behave like a belt-driven turbo), the E-Force uses a twin-screw, Roots-style design. This architecture provides instant boost from idle, giving you that neck-snapping throttle response muscle car enthusiasts love. The rotors compress air inside the intake manifold, forcing more oxygen into the combustion chamber so the engine can burn more fuel — and make more power.

Edelbrock’s system includes a high-flow intake, a low-profile manifold, an air-to-water intercooler integrated into the intake casting, and all necessary hardware for a clean install. Because it’s designed as a complete kit, it retains factory driveability, cold-start routines, and emissions compliance in many states when using the included calibration.

Real-World Power Gains by Engine Platform

The horsepower and torque numbers you achieve will depend on your specific engine, fuel quality, and whether you keep the engine stock or add supporting mods. Below are the typical peak gains based on published Edelbrock data and independent dyno tests.

5.7L HEMI (Challenger R/T)

The 5.7L HEMI, when fitted with the Edelbrock E-Force Stage 1 kit (which includes a custom tune), delivers rear-wheel horsepower in the 480–500 hp range. That is a gain of roughly 150–170 hp over stock. Torque jumps to around 475–490 lb-ft at the wheels. Many owners report that the car feels completely transformed — no more lag, no flat spots. The 5.7L’s compression ratio works well with 8–9 psi of boost on 91 octane fuel.

6.4L HEMI (Challenger Scat Pack / SRT 392)

The 6.4L naturally aspirated engine already makes solid power from the factory (485 hp crank). Adding the E-Force supercharger pushes it past 600 rear-wheel horsepower on a safe tune, with torque exceeding 575 lb-ft. Some dyno runs show as high as 625 rwhp on 93 octane with a cat-back exhaust upgrade. The increase is dramatic, and because the 6.4L has strong rods and pistons, it handles the boost reliably as long as the tune is correct.

6.2L Supercharged (Challenger Hellcat, Redeye, and Jailbreak)

Wait — why supercharge a car that already has a supercharger? Many Hellcat owners do so because the factory 2.4L IHI blower runs out of steam at higher boost levels. Swapping to an Edelbrock E-Force (which is a dual 80mm or 95mm throttle body option for Hellcat applications) allows for much higher airflow. On a stock Hellcat, the E-Force can push 700–750 hp at the wheels with a custom tune and E85 fuel. With upgraded injectors and a lower pulley, 850+ rwhp is attainable. Because the 6.2L’s internals are forged from the factory, it’s a solid foundation.

Beyond the Dyno: Real Driving Impressions

Numbers on paper only tell part of the story. The Edelbrock E-Force changes how the Challenger feels on the street. Because it builds boost almost instantly, you don’t have to wind the engine to 5,000 RPM to feel the kick. The air-to-water intercooler keeps intake temperatures low even during repeated pulls, so you don’t experience heat soak as quickly as with some air-to-air setups. The sound is also distinct: a deep, mechanical whine that lets everyone know you’re running forced induction, but not so loud that it becomes obnoxious during daily driving.

Installation Overview

Edelbrock designed the E-Force kit to be a bolt-on upgrade that does not require cutting or permanent modification of the vehicle. However, the installation is still a significant job. Typical steps include removing the intake manifold, fuel rails, injectors, and factory air box. The supercharger assembly then mounts onto the engine, and you reconnect the cooling system, wiring, and vacuum lines. The included intercooler requires connecting to the coolant loop (some kits use the factory reservoir, while others include a separate pump).

Most experienced mechanics can complete the installation in one full day. If you are doing it yourself, be prepared for eight to twelve hours of work. The instructions are clear, but having a second set of hands is helpful when lifting the supercharger unit into place. Professional installation is recommended for anyone not comfortable with fuel system and cooling system work.

Tuning Is Non-Negotiable

Every Edelbrock E-Force kit for the Challenger comes with a pre-loaded ECU tune via a handheld programmer or a diablosport device. This tune is necessary for proper air-fuel ratios, ignition timing, and transmission shift points (for automatic cars). Running a supercharger without a tune can destroy an engine in minutes. Edelbrock’s provided calibration is safe and conservatively optimized for 91 octane fuel. If you want more power or run higher octane (E85, race gas), you should get a custom dyno tune from a reputable shop.

Supporting Modifications to Consider

To get the most out of the Edelbrock E-Force supercharger, consider these upgrades:

  • Fuel System: The stock fuel pump and injectors may support Stage 1 power on a 5.7L or 6.4L, but for higher boost levels (Stage 2 or Stage 3) you will likely need larger injectors and a boost-referenced fuel pressure regulator. For Hellcat builds, a return-style fuel system is recommended above 750 whp.
  • Exhaust: A free-flowing cat-back or axle-back exhaust helps reduce backpressure and lets the engine breathe. Long-tube headers with high-flow cats gain another 20–30 hp but may affect emissions legality.
  • Cooling: The air-to-water intercooler is effective, but adding a larger heat exchanger (or even an ice tank) helps keep IATs down during extended track sessions. A better radiator and upgraded fan can also help with overall engine coolant temps.
  • Drivetrain: The extra torque can overwhelm stock half-shafts and clutches. If you plan to drag race or do hard launches, consider upgrading the axles, differential, and (for manual cars) a clutch rated for 700+ lb-ft.
  • Wheels & Tires: More power is useless without traction. A set of Nitto 555R2 or Mickey Thompson drag radials will put the power down much better than all-season street tires.

Comparison to Other Supercharger Options

How does the Edelbrock E-Force stack up against competitors like the ProCharger or Whipple? Each has strengths. ProCharger centrifugal kits are easier to install on some platforms and offer peak top-end power, but they lack low-end boost. Whipple’s twin-screw design is similar to Edelbrock, often making slightly more peak horsepower at higher boost levels, but the kits are usually more expensive and may have longer lead times. The Edelbrock stands out for its proven reliability, CARB EO (D-669) on many kits, and excellent customer support. It is also quieter than many competitors, which appeals to owners who want a stealthy appearance.

Reliability and Long-Term Ownership

One of the biggest concerns with supercharging a modern HEMI is engine durability. The 5.7L and 6.4L HEMIs have cast pistons and powdered-metal connecting rods. On 8–9 psi of boost and a safe tune, these engines can last tens of thousands of miles without issue. However, if you plan to track the car or push boost beyond 10 psi, forged internals become a wise investment. The 6.2L Hellcat engine comes forged from the factory and can handle 1,000 hp on the stock rotating assembly with proper fueling and tuning.

Edelbrock backs their supercharger kits with a limited lifetime warranty on the supercharger unit itself (excluding wear items and incorrect installation). Be sure to read the fine print: the warranty requires installation by an authorized dealer and adherence to the supplied tune.

Cost Breakdown

The price of an Edelbrock E-Force supercharger kit for the Challenger ranges from $7,500 to $9,000 for the 5.7L and 6.4L kits, plus installation (typically $1,500–$2,500). Hellcat-specific kits cost more, around $8,500–$11,000, because they include larger throttles and unique mounting brackets. When you add custom tuning, supporting mods, and labor, the total investment for a turnkey-supercharged Challenger can be $11,000–$16,000. That may sound steep, but compare it to the cost of trading up to a factory Hellcat or Demons — and you keep your current car with known history.

Frequently Asked Questions

Will the Edelbrock E-Force void my factory warranty?

Adding any supercharger will void the factory powertrain warranty if the dealer can prove the modification caused a failure. However, the Magnuson-Moss Warranty Act protects consumers — the dealer must show a direct link. Some owners have had success with dealer-friendly service departments, but you should expect the powertrain warranty to be effectively nullified after installation.

Can I install it myself?

Yes, if you have mechanical experience and the right tools. The kit comes with detailed instructions. However, tuning and final calibration may require a laptop and some familiarity with handheld programmers. If in doubt, pay a certified shop.

What about smog check emissions?

Many Edelbrock E-Force kits for the Challenger are CARB EO certified, which means they are legal for street use in all 50 states when installed with the included tune and without any other modifications that change emissions. Always verify the kit number against your vehicle’s year and model.

How much boost does the kit make?

Stage 1 kits typically produce 8–9 psi of boost. Stage 2 or “race” kits with smaller pulleys can hit 12–14 psi but require upgraded fuel systems and forged internals on 5.7L/6.4L engines.

Final Thoughts: Is the Edelbrock E-Force Right for You?

If you own a Challenger and feel it needs more power without losing daily drivability, the Edelbrock E-Force supercharger is an excellent choice. You can realistically gain 150–200 horsepower at the wheels on a 5.7L or 6.4L car, and even more on a Hellcat with the right supporting mods. The installation is straightforward, the intercooler is effective, and the tune is conservative enough for reliable street use. While the upfront cost is significant, the result is a transformed muscle car that can hang with cars costing twice as much.

For more details on specific kits, check out the official Edelbrock E-Force page. For real-world owner experiences and installation guides, forums like ChallengerTalk and LX Forums are invaluable resources. If you are ready to turn your Challenger into a true street beast, the Edelbrock E-Force delivers the goods.