3 Best Supercharger For 6.0 Ls Reviews

If you own a 6.0 LS engine, you know it’s a powerhouse waiting to be unleashed. But getting that extra surge of power—the kind that pins you to your seat—often means adding forced induction. A supercharger is one of the most effective ways to transform your naturally aspirated LS into a street-legal monster. However, with so many parts and options out there, it’s easy to feel overwhelmed about what you actually need for a successful, reliable build.

In this guide, we break down three essential components that can help you achieve that goal. From a complete Roots-style supercharger kit to the right spark plugs for boosted applications, you’ll learn exactly what to look for and why each part matters. Whether you’re a weekend warrior or a seasoned tuner, these reviews will help you make an informed decision without the guesswork.

Speedmaster Complete 6-71 Roots Supercharger Kit – Bolt-On Boost for LS V8s

If you want instant throttle response and a classic supercharger whine under your hood, the Speedmaster 6-71 Roots-style kit is a compelling choice. It’s designed to work with all standard-deck LS blocks, including your 6.0L, and promises a 45 to 55 percent horsepower increase right out of the box. The kit includes the supercharger case, double-pinned three-lobe rotors, intake manifold, Gilmer pulleys, belt, and all necessary gaskets—so you’re not chasing down missing pieces.

The build quality stands out: heavy-duty front and rear bearing plates handle sustained boost, and the double-pinned rotors help prevent slip even under detonation. The pop-off valve is relocated to the rear for cleaner installation. You will need to supply your own carburetor (dual four-barrel, 600-850 cfm typical) and distributor, but the carb adapter is included. This kit is streetable and delivers immediate boost, making it ideal for a weekend cruiser or show car. Just verify your rotating assembly can handle the extra power before sustained high-RPM use.

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• [ADDS 45-55% HORSEPOWER] Complete 6-71 Roots-style supercharger kit pumps streetable, instant-throttle boost into your GM LS – case, double-pinned 3-lobe rotors, factory-timed for consistent boost.
• [FITS ALL LS BLOCKS] Bolts to standard-deck LS1/LS2/LS3/LS6/LS7/4.8L/5.3L/6.0L/6.2L. Carb adapter accepts dual 4-barrel square-bore ( 600-850 cfm typical). Verify rotating assembly for sustained race use.
• [COMPLETE BOLT-ON KIT] Includes supercharger, intake manifold, snout, 50T/55T Gilmer pulleys, idler with bracket, 3in belt, V-belt crank pulley, dual-carb adapter, and all gaskets. Carbs/dist/fuel sold separately.
• [BUILT TO SURVIVE BOOST] Heavy-duty front/rear bearing plates handle sustained PSI. Double-pinned rotors prevent slip under detonation. Pop-off valve relocated to rear. 12-month warranty.
• [DIAL IN YOUR BOOST] Ships with 50T/55T pulleys for popular street range. 48T, 60T, 65T sold separately to adjust overdrive for race or street. Intended for racing – verify local emissions.

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KPALOREST Turbocharger – For Mazda 6 CITD Diesel, Not for LS Engines

It’s important to note that this turbocharger is designed specifically for the Mazda 6 CITD 2.0L diesel engine (J25S, RF5C), not for a 6.0 LS supercharger application. We include it here because some builders might confuse turbo and supercharger parts. However, if you are looking for a forced induction solution for your LS, this is not the right component. The KPALOREST unit focuses on reducing working temperatures and stabilizing power output for the Mazda diesel platform.

For an LS build, you need a supercharger or turbo kit that matches your engine’s displacement and airflow needs. This Mazda unit will not physically fit, and its turbine and compressor specs are tuned for a small diesel. If you’re committed to boosting your 6.0L, stick with dedicated LS supercharger kits like the Speedmaster above. This product is only relevant if you’re servicing a Mazda 6 diesel.

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• Reduce working temperature, reduce wear and ensure stable operation.
• The power output is stable, and the vehicle runs stably and comfortably.
• Automatically adjust the intake pressure to ensure the stability of power.
• Optimize the mixing of fuel and air, reduce fuel consumption and save fuel.
• Increase the air intake of the engine, burn more fully and improve the power.

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NGK TR7IX Iridium IX Spark Plugs – Colder Heat Range for Boosted LS Engines

When you add a supercharger to your 6.0 LS, cylinder temperatures rise significantly. Stock heat range spark plugs can become a weak link, causing pre-ignition or misfire. This NGK TR7IX set offers a two-step colder heat range compared to factory plugs for most LS engines, making it an excellent choice for your supercharged build. It fits 1997–2013 LS-based V8s including the 6.0L LQ4, LQ9, LY6, and L96 through 2019.

The iridium tip provides long life and consistent spark under high cylinder pressure. These plugs are also one heat range colder for LS7, LS9, and LSA applications. They come pregapped at .040 inches, but you should always verify gap for your specific setup. Whether you’re running the Speedmaster 6-71 kit or any other forced induction, using a colder plug like the TR7IX helps prevent detonation and keeps your engine safe at higher power levels.

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• TR7IX Iridium IX Spark Plug Set: This listing includes a complete set of 8 NGK TR7IX 3690 Iridium IX spark plugs for LS-based V8 engines. The full V8 set makes it convenient for cam swaps, boosted builds, ignition refreshes, dyno prep, and performance maintenance.
• Fits 1997–2013 LS-Based V8 Engines: Designed for popular LS engine families including LS1, LS2, LS3, LS6, LS7, LQ4, LQ9, LM7, L96, LY6, L33, L92, L99, LSA, and many related applications. Fitment includes 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L LS engines, with L96 coverage listed through 2019.
• Colder Heat Range For Performance Builds: These plugs are two heat ranges colder than stock for most LS car and truck engines. They are also listed as one heat range colder than stock for LS7, LS9, and LSA applications, making them useful for many higher-output LS combinations.
• Built For Boosted And Nitrous Applications: The colder TR7IX heat range is commonly recommended for turbocharged, supercharged, and nitrous LS engines. This makes the plug a strong fit for performance builds that generate more cylinder heat than a stock naturally aspirated setup.
• Iridium Tip And Installation Specs: Each plug features a fine iridium tip, factory .040" pre-gap, 14mm thread, .708" reach, and 5/8" hex. Cold-rolled threads, trivalent plating, high-grade ceramic, and a tapered ground electrode support clean installation and reliable ignition performance.

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Buyer’s Guide: What to Consider

Choosing the right supercharger for your 6.0 LS involves more than just picking a kit. You need to consider fitment, supporting parts, and your ultimate performance goals. These seven factors will help you navigate the options and build a reliable, high-power setup.

• Supercharger Type: Choose between Roots-style, twin-screw, or centrifugal superchargers. Roots kits like the Speedmaster offer instant low-end boost and a classic whine, while centrifugals pull harder at higher RPM. For street-driven 6.0L engines, a Roots or twin-screw provides excellent drivability.
• Compatibility with Your LS: Not all supercharger kits fit every LS variant. Check deck height, intake port shape, and accessory drive clearance. The Speedmaster kit fits standard-deck LS1 through LS7 and truck engines like the 6.0L LQ4, but you must confirm your rotating assembly strength.
• Included Components: A complete kit should include the supercharger, intake manifold, pulleys, belt, idler bracket, and gaskets. The Speedmaster kit covers most of these, saving you from sourcing parts separately. Some kits require additional fuel system or carburetor upgrades.
• Supporting Modifications: Adding boost demands better spark plugs, fuel injectors, and often a standalone engine management system. The NGK TR7IX spark plugs are a perfect example of a simple upgrade that protects against detonation. Plan for tuning and possibly larger fuel pump.
• Boost Level and Power Goals: Determine how much boost you want before buying. Roots kits typically run 6-10 psi on a healthy 6.0L. The Speedmaster kit claims 45-55% HP gain, which may require internal upgrades. Match the supercharger size and pulley ratio to your target power level.
• Installation Skill Requirements: Supercharger installation is not for beginners. You'll need mechanical skills and tools for manifold removal, pulley alignment, and belt tension. The Speedmaster kit is described as bolt-on, but you should be comfortable with engine bay work or hire a professional.
• Budget and Long-Term Reliability: A full supercharger system costs more than just the kit. Factor in tuning, fuel system, spark plugs, and potential engine upgrades. The Speedmaster kit offers a price-effective entry point, but always budget for cooling and supporting mods to ensure longevity.

Conclusion

Boosting a 6.0 LS can transform your vehicle into a thrilling street machine or track weapon. The Speedmaster 6-71 supercharger kit offers a complete, streetable solution with instant throttle response and significant power gains. Pair it with the NGK TR7IX colder spark plugs to keep detonation at bay and maintain consistent ignition under high cylinder pressures. While the KPALOREST turbo is not for your LS build, it serves as a reminder to always verify compatibility before purchasing.

Your best approach is to start with a well-matched supercharger kit like Speedmaster, ensure your engine’s internals can handle the boost, and support the build with quality parts like the NGK spark plugs. Take your time during installation and tuning, and you’ll have a reliable, potent 6.0L LS that delivers exactly the excitement you’re looking for.