Supercharger

What Is a Supercharger and Why Does It Matter?

A supercharger is a forced-induction device that compresses the air entering an engine's intake, allowing it to burn more fuel per combustion cycle and produce significantly more power. Unlike a turbocharger — which is driven by exhaust gases — a supercharger is mechanically driven directly off the engine's crankshaft via a belt or gear, delivering near-instant boost with virtually no lag. The result is a throttle response and power delivery that feels immediate and predictable, making superchargers a favorite for both street performance builds and dedicated race applications.

Types of Superchargers

Not all superchargers are created equal. The three most common designs each have distinct characteristics worth understanding before you buy:

• Roots-type (positive displacement): The classic "blower" design that sits atop the intake manifold, iconic in drag racing and hot rod builds. Delivers strong low-end torque and an aggressive appearance.
• Twin-screw: Similar in layout to a Roots blower but uses meshing helical rotors for higher efficiency and cooler discharge air temperatures, making it popular in high-horsepower street builds.
• Centrifugal: Functions more like a belt-driven turbocharger, building boost as RPM rises. These tend to be compact, efficient, and well-suited to daily-driven performance cars.

Key Considerations When Shopping for a Supercharger

Choosing the right supercharger starts with matching the unit to your specific engine displacement, intended use, and power goals. A system sized too small won't deliver meaningful gains, while one that's oversized can create excessive heat and stress on supporting components like the fuel system, cooling system, and internals. Always verify compatibility with your vehicle's year, make, model, and engine code before purchasing. Consider whether the kit includes all necessary hardware — brackets, pulleys, belts, and tuning instructions — or whether you'll need to source supporting parts separately.

Top Supercharger Brands

Speedmaster is a leading supercharger brand in this category, offering a broad lineup of Roots-style blower kits and components aimed at classic American V8 applications. Their kits are popular with hot rodders and engine builders looking for bolt-on performance with comprehensive hardware packages.

The Blower Shop is a legendary name in the world of high-performance supercharging, specializing in precision-machined, competition-grade Roots-type blowers. Built for serious power applications on the strip and in the engine bay, their products are trusted by racers who demand reliability at extreme boost levels.

Britpart rounds out the lineup with supercharger components tailored to Land Rover applications, making them an important resource for off-road and 4x4 enthusiasts who want to maintain or upgrade the factory forced-induction systems on their trucks and SUVs.

Supercharger Installation and Tuning

Most supercharger kits require a professional tune after installation to ensure the engine management system correctly accounts for the increased air and fuel demands. Running a forced-induction engine on an unmodified factory tune can lead to lean conditions and serious engine damage. Whether you're doing a full street build or a dedicated race setup, always pair your supercharger installation with a proper dyno tune from a qualified technician.