Running a Hellcat Supercharger on an LS Swap: Fitment, Adapters, and Tuning

The 2.4L TVS hellcat blower on an LS is one of the cleanest forced-induction combos in modern performance building. It’s everywhere — LS-swapped Camaros, Fox bodies, S10 trucks, Jeeps, kit cars — because the math works: you get a 2.4-liter twin-screw supercharger that flows 1,250+ CFM on a platform with near-unlimited aftermarket support.

But slapping a hellcat blower on an LS isn’t bolt-on. There are fitment decisions, adapter requirements, and tuning considerations that can make or break the build. This guide covers all of it.

Why the Hellcat Supercharger Works So Well on LS Engines

The LS family runs a square bore pattern with a large throttle body opening. The hellcat 2.4L TVS supercharger — originally designed for the 6.2L HEMI — ports well to that airflow demand and produces positive displacement boost from idle. Unlike a centrifugal blower, you get full boost pressure at low RPM, which is why drag builds and street-strip machines love it.

The 2.7L TVS version, used in the Hellcat Redeye and Demon, displaces even more per revolution. On an LS, either version will support 600–900+ horsepower depending on displacement, fueling, and tune.

Adapter Kits: What You Actually Need

The hellcat blower mounts to a HEMI intake pattern — not an LS pattern. To run it on an LS, you need an adapter plate that bridges the hellcat supercharger inlet to the LS intake manifold.

Several companies produce these adapters. Key specs to look for:

• Material: Billet aluminum only — no cast adapters under boost
• Port match: The adapter should port-match to the supercharger outlet and your LS intake runners
• Throttle body location: Some adapters relocate the throttle body to the front or rear — confirm clearance with your intake manifold
• Coolant routing: The hellcat blower uses a liquid-cooled charge cooler. You’ll need to route coolant lines from a dedicated heat exchanger (intercooler pump + heat exchanger is a required add-on)

Budget $800–$1,500 for a quality adapter kit with coolant fittings. Don’t cheap out here — a poorly machined adapter leaks boost and fails under heat cycling.

Intercooler and Charge Cooling Requirements

The hellcat supercharger uses an integrated charge air cooler (the brick-shaped heat exchanger mounted to the supercharger outlet). This is water-to-air cooling — the supercharger heats the air, the charge cooler drops it back down.

For an LS swap build, you’ll need:

• A dedicated intercooler pump (Bosch 0392 or Meziere equivalent)
• A front-mount heat exchanger (air-to-water radiator)
• Hose routing from the supercharger inlet/outlet ports to the heat exchanger
• A reservoir and filler neck

This adds complexity but it’s non-negotiable. Running a hellcat blower without its charge cooling system will cook inlet temps under boost and kill power — and eventually the engine.

Fuel System: What the LS Needs to Support the Blower

A factory LS fuel system won’t keep up with a hellcat blower making real boost. Rule of thumb:

• Under 600 hp: upgraded injectors (80–100 lb/hr) and a return-style fuel system
• 600–800 hp: dual fuel pumps or an aftermarket in-tank pump (Walbro 450, DeatschWerks 450)
• 800+ hp: port injection with an E85 option or direct port nitrous as a supplemental strategy

Match your fuel system to your horsepower goal before the tune. A lean condition under boost is a rod-bending event.

Tuning a Hellcat Blower LS Build

The tune is where the build lives or dies. You’re running a positive displacement blower on a platform that wasn’t designed for it — the ECU needs to know boost target, spark curve under boost, fuel injector scaling, and boost protection (knock retard and boost cut strategy).

HP Tuners and EFI Live are the two dominant platforms for LS tuning. Either will work. Find a tuner with documented hellcat-on-LS experience — this is not a job for a street-tune tune shop.

Expected baseline numbers on a 6.0L LS with the 2.4L TVS at 10 psi: 650–700 rwhp on E85 with proper fueling and a clean tune.

Porting the Hellcat Blower for LS Applications

If you’re building an LS swap around maximum output, supercharger porting is worth considering before the blower goes in. Porting the inlet, snout, and rotors on the hellcat 2.4L TVS can add 40–80 rwhp at the same boost level — by reducing restriction and heat in the inlet tract.

FAS Motorsports ports hellcat superchargers specifically for high-output builds. If you’re chasing 800+ hp on an LS, a ported blower is a better investment than just adding boost — more flow at lower pressure means less heat and more power per pound of boost.

Explore hellcat supercharger services at FAS Motorsports →

Bottom Line

The hellcat supercharger on an LS works — and works well — but it takes proper planning. Adapter kit, charge cooling, fuel system, and a competent tune are the four elements that determine whether this build makes 700 hp reliably or grenades on the dyno.

Done right, it’s one of the most cost-effective ways to make serious power on the LS platform. The hellcat blower is available used at prices that make new blower kits look expensive, and the power density per dollar is hard to beat.

If you’re sourcing a hellcat supercharger for your LS build and want porting done before installation, contact FAS Motorsports — we work with builders nationwide and can ship your blower back ready to install.