Best HEMI Supercharger Kits for Dodge Challenger & Charger

A HEMI supercharger kit is the single fastest way to turn a naturally aspirated Dodge Challenger or Charger into a 500-to-600-plus horsepower street car — and Edelbrock's E-Force line is the bolt-on system that does it without touching the bottom end. Whether you run a 375-hp 5.7L R/T, a 425-hp 6.1L SRT8, or a 485-hp 6.4L 392, there is a complete, intercooled E-Force kit engineered for your exact engine. At NLP Performance in Tampa, FL, these positive-displacement roots blowers are our most-requested big-power upgrade for the LX/LC platform, and below we compare every current kit head-to-head so you buy the right one the first time.

Why Supercharge a HEMI Challenger or Charger?

A supercharger adds 100–190 horsepower to a modern Gen III HEMI because it force-feeds compressed air into the engine instead of relying on atmospheric pressure. Edelbrock's E-Force kits are positive-displacement roots-style units, which means they build boost the instant you touch the throttle — there is no spool-up lag like a turbo and no belt-driven whine ramp like a centrifugal blower. On the 6.4L 392, that lifts a factory-rated 485 hp / 475 lb-ft (crank) engine to a dyno-verified 572 hp and 531 lb-ft at the rear wheels, all on 91-octane pump fuel.

Compared with the alternatives, a roots-style E-Force blower trades the ultimate top-end of a turbo for immediate low-rpm torque and simplicity. A single turbo can make more peak power but adds lag, plumbing, and heat; a centrifugal supercharger builds boost gradually and peaks only near redline. The roots TVS design delivers close to full boost by 2,500–3,000 rpm, which is exactly what makes a heavy 4,300-lb Charger feel instantly quicker on the street rather than only at the top of third gear.

The appeal for LX/LC owners is that these are complete, street-legal-style systems that mount under the factory hood and reuse the stock fuel system architecture. Every E-Force kit includes an integrated air-to-water intercooler, a low-temperature heat exchanger, upgraded fuel injectors, the supercharger head unit, and a handheld calibration tool pre-loaded with Edelbrock's engine tune. Nothing about the swap requires opening the engine: the stock forged-crank 5.7L, 6.1L, and 6.4L HEMI short blocks all handle 6–7 psi of boost reliably when fueled and tuned correctly.

Edelbrock E-Force Supercharger Kits Compared

The right kit is determined by your engine and model year, not by budget alone — each E-Force system is calibrated for a specific HEMI displacement. Use the table below to match your Challenger or Charger to its kit, then read the individual breakdowns underneath.

*Figures are Edelbrock-published outputs. The 5.7L and 6.4L kits are rated at the rear wheels; the 6.1L kit is quoted at the crank (a gain of roughly 131 hp over the stock 425-hp SRT8). Actual results vary with fuel, exhaust, and tune.

Best for 392 Owners: Edelbrock E-Force Stage 1 (6.4L HEMI)

The Edelbrock E-Force kit for the 6.4L 392 is the highest-output blower in the Challenger and Charger range, taking the factory 485-hp Scat Pack and SRT 392 to 572 hp and 531 lb-ft at the wheels. It uses the Eaton Gen VI R2650 TVS rotor pack — a 2,650cc four-lobe design with 170 degrees of rotor twist — feeding a dual-pass air-to-water intercooler that keeps intake temperatures in check during repeated pulls. Because the 392 already has the largest naturally aspirated displacement, it makes the most power per pound of boost of any HEMI in the lineup.

Best for 2015–2018 5.7L R/T: E-Force 2650 TVS

If you run a 2015–2018 Challenger or Charger R/T with the 5.7L HEMI, the E-Force 2650 TVS kit is the modern-rotor answer, lifting the ~375-hp engine to 483 hp and 450 lb-ft at the wheels. It uses the same large Eaton Gen VI R2650 supercharger as the 392 kit, so the 5.7L breathes through more blower than it strictly needs — that headroom keeps intake air temperatures low and leaves margin for a pulley and fuel upgrade later.

Best for SRT8 Owners: E-Force Stage 1 (6.1L HEMI)

For the 2005–2010 Charger, Magnum, and Challenger SRT8 — plus the 300C SRT8 — the 6.1L E-Force kit takes the 425-hp engine to an Edelbrock-advertised 556 hp and 520 lb-ft, a gain of roughly 131 hp. It runs the earlier Eaton Gen VI TVS2300 rotor pack with 160 degrees of twist at about 6 psi, and like every E-Force system it arrives complete with intercooler, injectors, and the calibration module. It is the most affordable way to add a blower to the first-generation LX/LC SRT cars.

Budget 5.7L Pick: E-Force Stage 1 (2011–2014)

The 2011–2014 5.7L kit is the value leader at $9,495.95, and it still makes strong numbers — 471 hp and 475 lb-ft at the wheels from the second-generation 5.7L HEMI. It uses the proven TVS2300 rotor at about 6 psi. If you own an earlier R/T Challenger or Charger and want the E-Force experience without stepping up to the R2650 kits, this is the one to buy.

How Edelbrock E-Force Superchargers Work

An E-Force supercharger is a roots-style, positive-displacement blower driven directly off the crankshaft by the accessory belt. Inside sits an Eaton Twin Vortices Series (TVS) rotor pack — either the 2,300cc unit on the 6.1L and 2011–2014 5.7L kits or the larger 2,650cc R2650 unit on the 2015-and-up 5.7L and 6.4L kits. The four-lobe rotors with up to 170 degrees of twist move a fixed volume of air per revolution, so boost is available from just off idle and rises with rpm. That is why a supercharged HEMI feels like a bigger-displacement engine rather than a peaky, laggy one.

Compressed air heats up, so every E-Force kit routes intake charge through an integrated air-to-water intercooler fed by a front-mounted low-temperature heat exchanger and its own coolant pump. Keeping intake air temperatures down protects against detonation and lets the included calibration hold aggressive timing on 91-octane fuel. The result is a system that delivers instant throttle response and consistent power on back-to-back pulls — the hallmark of a well-engineered roots blower.

Installation, Tuning & Supporting Mods

Plan on a full day for the install — an experienced tech or shop typically needs 8–12 hours to fit an E-Force kit on an LX/LC HEMI. The system reuses the factory fuel rails and comes with higher-flow injectors and a handheld tuner pre-loaded with Edelbrock's calibration, so the car is drivable the moment the swap is finished; no separate custom tune is required to run the advertised power. For the cleanest results, refresh the spark plugs (one heat range colder is common), verify the belt routing, and top off the intercooler loop before the first start.

To go beyond the baseline numbers, the usual supporting upgrades are a smaller supercharger pulley for more boost, an upgraded fuel pump and injectors, a colder plug, and a free-flowing exhaust. Automatic cars benefit from a built transmission or upgraded torque converter once you are consistently putting 500-plus horsepower to the ground, and manual Challengers should plan on a stronger clutch. Every one of these HEMI supercharger kits keeps the stock short block, so staying near the included tune's boost level is the key to long-term reliability.