Are you looking to unlock the true potential of your LS engine? Whether you’re building a street machine, a track monster, or a daily driver with serious punch, adding a supercharger is one of the most effective ways to gain massive horsepower and torque. But with so many options out there—from complete bolt-on kits to small accessories that improve reliability—choosing the right setup can feel overwhelming.
In this guide, you’ll get detailed reviews of ten products that cover everything from full supercharger systems to adapter plates, MAP sensor caps, and oil cooler upgrades. Each review focuses on how the product fits into an LS engine platform, helping you decide what’s worth your time and money. By the end, you’ll have a clear picture of what works best for your specific build.
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Speedmaster 6-71 Roots Supercharger Kit – Instant-Throttle Power for LS Engines
Brand: Speedmaster
A complete, robust roots supercharger kit that delivers impressive power gains on LS engines if you're ready to handle the carbureted setup.
The Speedmaster 6-71 Roots-style supercharger kit is a complete bolt-on solution for anyone looking to add 45 to 55 percent more horsepower to a GM LS engine. It comes with the blower case, intake manifold, double-pinned three-lobe rotors, Gilmer pulleys (50T and 55T), a 3-inch belt, V-belt crank pulley, idler bracket, dual-carb adapter, and all necessary gaskets. The rotors are factory-timed for consistent boost, which simplifies installation and tuning. This kit is designed to fit standard-deck LS engines including LS1, LS2, LS3, LS6, LS7, 4.8L, 5.3L, 6.0L, and 6.2L. The carb adapter accepts dual four-barrel square-bore carbs in the 600 to 850 cfm range, so you’ll need to supply carburetors, distributor, and fuel system separately.
One of the standout features is the heavy-duty front and rear bearing plates, which help the supercharger handle sustained boost without premature wear. The double-pinned rotors prevent slippage under detonation, and the pop-off valve has been relocated to the rear for cleaner installation. This is a roots-style blower, meaning you get instant throttle response and great low-end torque—perfect for street-driven cars that still see the occasional drag strip. Just make sure your LS engine’s rotating assembly is built to handle the extra stress if you plan on sustained high-rpm or race use. The kit comes with a 12-month warranty for peace of mind.
- Adds 45-55% horsepower
- Includes everything except carbs and fuel system
- Heavy-duty bearing plates for durability
- Factory-timed rotors for consistent boost
- Requires separate carburetors and distributor
- Not for stock rotating assemblies in race applications
- Roots style may not suit every build
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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.
Edelbrock 1564 Supercharger Assembly – Eaton TVS for Cathedral Port 5.3L LS
Brand: Edelbrock
An excellent, reliable supercharger assembly for 5.3L cathedral port LS engines that want a safe, daily-drivable power boost.
The Edelbrock 1564 supercharger assembly is designed specifically for GM SUV 1500 series with Gen IV cathedral port 5.3L LS engines. It uses an Eaton TVS 2300 rotor type, which is a twin-vortex supercharger known for its efficiency and quiet operation. The kit is rated for up to 384 rear-wheel horsepower and 390 rear-wheel pound-feet of torque, with a maximum boost pressure of 6 psi. This is a complete supercharger assembly that bolts onto the factory intake manifold location, making it a straightforward upgrade for compatible trucks and SUVs.
The Eaton TVS technology provides smooth, linear power delivery across the rpm range, unlike some roots blowers that can feel aggressive at lower speeds. The 6 psi boost level is conservative, meaning you can run this on a stock engine with proper tuning and fuel upgrades. This kit is ideal for someone who wants a reliable, daily-drivable increase in power without the complexity of a custom fab job. It’s not the most powerful option on the list, but the engineering quality and ease of installation make it a top choice for 5.3L cathedral port LS owners who value reliability over peak numbers.
- Eaton TVS 2300 rotor technology
- 384 RWHP and 390 RW torque
- 6 psi boost safe for stock engines
- Direct bolt-on for compatible 5.3L LS engines
- Limited to cathedral port 5.3L engines
- Conservatively low boost compared to aftermarket kits
- Requires tuning and fuel system upgrades
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- 384RW Maximum Horsepower
- 390RW ft-lb. Maximum Torque
- 6 psi Maximum Boost Pressure
- Eaton TVS 2300 Rotor Type
- 6-Rib 4. 125 in. Pulley
Atomic 2701 AirForce Intake Manifold – High-Flow Polymer Design for Boosted LS
Brand: Atomic
A top-performing intake manifold that significantly improves airflow and reduces heat soak, making it a smart upgrade for any supercharged cathedral port LS engine.
The Atomic 2701 AirForce intake manifold is not a supercharger itself, but it’s a critical component for any boosted LS engine build. Designed for cathedral port LS heads, this manifold features a 103mm throttle bore that allows use of large throttle bodies for greater airflow. The direct-flow path runner design promotes maximum airflow, which is essential when you’re forcing air into the engine with a supercharger. Lingenfelter testing showed a gain of 36 horsepower at the rear wheels over competitors when tested on an LPE Z28 Camaro. That’s a significant improvement that proves the manifold’s flow capabilities.
One of the key advantages is the polymer material, which resists heat soak and minimizes weight compared to aluminum intakes. In a forced-induction setup, reducing heat soak means the intake air stays cooler, which helps prevent detonation and maintains power. The large 103mm throttle bore opens up the top end, making this manifold ideal for high-horsepower supercharged builds. It’s also compatible with stock LS throttle bodies with an adapter, but you’ll get the best results with an aftermarket 103mm unit. If you’re building a street/strip LS engine with a supercharger, this intake manifold can unlock extra airflow that the stock manifold simply can’t provide.
- 36 RWHP gain over competitors
- Polymer resists heat soak
- 103mm throttle bore for huge airflow
- Lightweight design
- Not a complete supercharger kit
- Requires large throttle body (sold separately)
- Fits cathedral port heads only
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- Lingenfelter test shows 36 HP AT THE REAR WHEELS over the competition as tested on a LPE Z28 Camaro
- Polymer material resists heat soak and minimizes weight
- 103mm Throttle bore allows the use of large throttle bodies for greater air flow
- Direct flow path runner design promotes maximum airflow
- Allows for the use of stock fuel rails, aftermarket rails or even the Atomic LS EFI
- Fit type: Vehicle Specific
AMR500 Roots-Type Mechanical Supercharger – Compact Blower for Small Displacement Engines
Brand: GJAUTOPARTS
A tiny roots blower that works well for 1.0-1.6L engines but is completely unsuitable for any LS engine build.
The AMR500 from GJAUTOPARTS is a small roots-type mechanical supercharger designed for 1.0L to 2.2L naturally aspirated gasoline engines. It delivers 500cc of forced air per revolution and is belt-driven, using a twin-lobe rotary design for instant low-rpm torque response. The unit is made of die-cast aluminum with integrated cooling fins and includes a pre-mounted V-pulley. For optimal efficiency on 1.0-1.6L engines, you can expect 3-6 psi of boost. On 1.8-2.2L engines, you’ll see more modest gains (2-4 psi) and will need higher pulley ratios and professional tuning.
It’s important to note that this supercharger is not intended for LS engines, which have displacements starting at 4.8L. The AMR500 simply does not have the airflow capacity to provide meaningful boost to a V8 of that size. It’s better suited for small four-cylinder engines, motorcycles, or ATVs where space is tight. The kit includes only the supercharger housing, internal timing gears, and pulley. You’ll need to fabricate your own mounting brackets, drive belts, intake piping, and fuel system upgrades. This is a project for advanced DIYers who enjoy custom fabrication, not a bolt-on solution for LS platforms.
- Compact and lightweight (~6kg)
- Instant low-RPM torque response
- Durable aluminum housing with cooling fins
- Affordable entry into forced induction
- Not compatible with LS engines (too small)
- Requires extensive custom fabrication
- Low boost potential on larger engines
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- ROOTS-TYPE MECHANICAL SUPERCHARGER – Belt-driven positive displacement blower using twin-lobe rotary design (commonly called "Roots-type") for instant low-RPM torque response. Delivers 500cc of forced air per revolution. Ideal for enthusiasts seeking linear power delivery.
- COMPATIBILITY & REALISTIC PERFORMANCE – Compatible with 1.0L–2.2L naturally aspirated gasoline engines. Optimal efficiency: 1.0-1.6L (3-6 psi typical boost). 1.8-2.2L applications may see modest gains (2-4 psi) and require higher pulley ratios + professional tuning. Results vary by engine condition, fuel system, and ECU calibration.
- PROFESSIONAL INSTALLATION ESSENTIAL – Includes: AMR500 supercharger housing, internal timing gears, pre-mounted V-pulley. Does NOT include: mounting brackets, drive belts, intake piping, fuel upgrades, or tuning tools.
- DURABLE ALUMINUM CONSTRUCTION – Die-cast aluminum housing with integrated cooling fins for optimal heat management. Internal components use hardened steel with specialized coating for wear resistance. Total weight: ~6kg for minimal impact on engine balance
- IMPORTANT USAGE NOTICE – Mechanical supercharging may increase fuel consumption under equivalent driving conditions. This component is designed for off-road, track, or enthusiast builds. We recommend verifying local vehicle modification guidelines before installation. Professional consultation is advised to ensure proper integration with your specific engine setup.
OywhC Supercharger MAP Vacuum Port Sealing Cap (Silver, Long Spacing) – Precision Prevention
Brand: OywhC
A cost-effective, well-made sealing cap that prevents vacuum leaks and keeps your supercharged LS engine running smoothly.
The OywhC Supercharger MAP Vacuum Port Sealing Cap in silver with long hole spacing is a small but important accessory for any GM LSA, LS9, LT4, LS, Lq4, or LSX series engine running forced induction. Its sole purpose is to seal one or both MAP sensor port locations on the supercharger intake system. Over time, these ports can leak air, causing erratic idle, lean conditions, and performance loss. This cap prevents dust, oil, and impurities from entering through idle ports, maintaining optimal intake flow efficiency.
Machined from T6061 aluminum alloy and CNC finished with an anodized silver coating, this cap is built to exact dimensions for reliable sealing. It does not require any special tools—you simply replace the old or damaged cap. The long hole spacing variant fits specific port spacing, so it’s critical to check compatibility before ordering. While it’s not a performance part that directly adds horsepower, it is an essential reliability component for anyone who has a supercharged LS engine and wants to ensure the intake system remains airtight. A leaking MAP port can cause drivability issues that are hard to diagnose, so this cap is a cheap insurance policy.
- Prevents air leaks from MAP ports
- CNC-machined T6061 aluminum for durability
- Anodized finish resists corrosion
- Simple, tool-free installation
- Does not directly increase power
- Must verify hole spacing compatibility
- Only for specific LS-based supercharged engines
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- 🚗【Application Scope】Supercharger MAP Vacuum Port Sealing Cap for GM LSA, LS9, LT4, LS, Lq4, LSX ( 4.8L 5.3L 6.0L) engines series. Note: Please check the compatible Port Hole Spacing before purchasing.
- 🚗【Product Functionality】 Can be used to Sealing 1 or both MAP sensor port locations, effectively seals air-leaking ports on the engine,Prevent dust, oil stains and other impurities from entering through the idle ports maintains optimal intake flow efficiency.
- 🚗【Precision Manufacturing】Crafted from T6061 aluminum alloy via CNC machining, with a anodized finish, ensuring precise dimensions, robust durability, and reliable sealing.
- 🚗【Easy to Install】No special tools are required. Simply replace old or damaged parts to keep the engine's intake system running properly and prevent excess air from entering.
- 🚗【Package List】 The package contains 1 X Port Sealing Cap, 1 X O ring and 1 X Installation hardware ⚠️ Small parts inside. Keep out of children's reach to prevent swallowing!
OywhC Supercharger MAP Vacuum Port Sealing Cap (Black, Long Spacing) – Reliable Seal
Brand: OywhC
A well-made sealing cap that keeps your supercharged LS engine's MAP ports leak-free, now in a sleek black finish.
This version of the OywhC MAP sealing cap is identical in function to its silver counterpart but finished in black with long hole spacing. It fits the same range of GM supercharged engines—LSA, LS9, LT4, LS, Lq4, LSX series—and is designed to seal one or both MAP sensor port locations. The black anodized finish gives it a stealthy look that blends into engine bays with dark themes. The cap effectively prevents airborne contaminants from entering the intake via idle ports, which can disrupt the air/fuel ratio and cause rough idling or even detonation.
The construction is the same high standard: T6061 aluminum alloy with precision CNC machining and anodizing. Installation is straightforward—no special tools or expertise required. As with the silver version, you must check the port hole spacing on your supercharger before purchasing; the long spacing variant is not interchangeable with the short spacing one. For LS builders who have already mapped out their intake system and want a clean, leak-free seal, this black cap serves the same purpose as the silver one but with a more understated appearance. It’s a minor detail, but one that matters if you’re OCD about your engine bay aesthetics.
- Black anodized finish for stealth appearance
- Same precision construction as silver version
- Prevents intake air leaks
- No special tools needed
- No direct performance gain
- Must verify spacing compatibility
- Identical function to other color options
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- 🚗【Application Scope】Supercharger MAP Vacuum Port Sealing Cap for GM LSA, LS9, LT4, LS, Lq4, LSX ( 4.8L 5.3L 6.0L) engines series. Note: Please check the compatible Port Hole Spacing before purchasing.
- 🚗【Product Functionality】 Can be used to Sealing 1 or both MAP sensor port locations, effectively seals air-leaking ports on the engine,Prevent dust, oil stains and other impurities from entering through the idle ports maintains optimal intake flow efficiency.
- 🚗【Precision Manufacturing】Crafted from T6061 aluminum alloy via CNC machining, with a anodized finish, ensuring precise dimensions, robust durability, and reliable sealing.
- 🚗【Easy to Install】No special tools are required. Simply replace old or damaged parts to keep the engine's intake system running properly and prevent excess air from entering.
- 🚗【Package List】 The package contains 1 X Port Sealing Cap, 1 X O ring and 1 X Installation hardware ⚠️ Small parts inside. Keep out of children's reach to prevent swallowing!
Bonbo Engine Oil Cooler Adapter Kit – Protect Your LS Under Boost
Brand: Bonbo
An essential oil cooling adapter for any supercharged LS build, helping maintain safe oil temperatures under high-stress conditions.
The Bonbo Engine Oil Cooler Adapter Kit is designed specifically for GM LS engines including LS1, LS2, LS3, LS6, LS7, LS9, LSX, and Gen IV variants, fitting 1997-2019 Corvettes (C5, C6, C7) and other applications. When you add a supercharger to an LS engine, oil temperatures can rise significantly due to increased heat load. This adapter allows you to easily install an oil cooler between the engine block and the oil filter, helping to lower oil temperatures and maintain proper viscosity under sustained boost. The kit includes a slim-profile adapter block that provides 10 AN male connections for oil inlets and outlets, plus a port for an oil temperature sensor and another for an oil feed line.
The adapter is machined from 6061 billet aluminum with a black hard-coat anodized finish that resists corrosion, oxidation, and impact. The slim design provides extra header clearance, which is a nice bonus in tight engine bays. By retaining the original factory oil filter location, installation is straightforward and doesn’t require relocating the filter. This kit is a smart addition to any LS engine that will see track time or aggressive street driving with forced induction. Lower oil temperature directly translates to better engine protection and longevity, especially if you’re running higher boost levels.
- Enables easy oil cooler installation
- Slim design improves header clearance
- 10 AN ports for flexible routing
- Billet aluminum construction with corrosion resistance
- Oil cooler not included
- Requires additional lines and fittings
- Not a direct power adder
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- 【Wide Application】This Oil Cooler Adapter Kit is suitable for GM, LS1, LS2, LS3, LS6, LS7, LS9, LSX, Gen IV engines; Fits for 1997-2019 Corvettes C5, C6, C7.
- 【High Performance】The oil cooler adapter block kit is specially designed to allows you easily install an oil cooler in your engine, helps to reduce the oil pressure drop while retaining the original factory oil filter location.
- 【Unique Design】The slim design of the adapter can provide more headers clearance. In additional, there are 10 AN male connections for the oil inlets or outlets as well as a port for the oil temperature sensor and the oil feed line.
- 【Superior Material】Made from top quality 6061 billet aluminum with black hard coat anodized, great strength, prevent corrosion, oxidation and rust, impact resistance, sturdy and durable, ensures long term reliable service.
- 【100% Satisfaction Guarantee】If you're not satisfied with our Oil Cooler Conversion Set, simply return it for getting refund in 30 days. While you have any questions about our products, please feel free to contact us and we will provide the best service. Always buy confidently in Bonbo!
DJTuning Gen III/IV LS Cathedral Port Hellcat Supercharger Adapter – Boost Swap Solution
Brand: DJTuning
A clever adapter that lets you marry a Hellcat supercharger to cathedral port LS engines, ideal for advanced builders chasing big power on a budget.
The DJTuning adapter plates enable you to mount a Hellcat supercharger (from the Dodge 6.2L Hemi) onto Gen III/IV LS cathedral port heads. This is a niche but powerful setup for LS builders who want to take advantage of the abundant Hellcat blowers available on the used market. The kit includes two adapter plates, ten bolts to attach the plates to the engine, eight seals to seal the adapters to the supercharger, and two seals to seal the adapters to the engine. The plates are precision-machined to align the Hellcat’s intake ports with the cathedral port LS heads, allowing you to use the supercharger’s integrated intercooler and throttle body.
Using this adapter opens up a high-flow supercharger option that can deliver serious power on an LS platform. The Hellcat blower (I-1 or newer) is a twin-screw unit that can support 700+ horsepower with proper fuel and tuning. However, this is not a bolt-on solution—you’ll need to fabricate custom intercooler plumbing, belt drive, and possibly modify the hood clearance. The adapter itself is well-made and includes all necessary hardware, but the rest of the installation requires significant fabrication skill. If you’re looking for a unique, high-horsepower LS supercharger setup and have the fabrication chops, this adapter is a solid foundation.
- Allows using affordable Hellcat superchargers on LS
- Complete hardware kit included
- Precision-machined for proper sealing
- Potential for high horsepower with OEM reliability
- Requires extensive custom fabrication
- Not a complete kit (no belt, plumbing, etc.)
- Only fits cathedral port heads
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- 2 adapter plates
- 10 bolts to attach the adapter plates to the engine
- 1 set of 8x seals to seal the adapters to the supercharger
- 1 set of 2x seals to seal the adapters to the engine
OywhC Supercharger MAP Vacuum Port Sealing Cap (Black, Short Spacing) – Compact Fit
Brand: OywhC
A precision sealing cap for short-spacing MAP ports that keeps your supercharged LS's intake system leak-free and running right.
This variant of the OywhC MAP sealing cap offers black anodized finish with short hole spacing, designed for GM supercharged engines where the port spacing is tighter. It fits the same range of engines (LSA, LS9, LT4, LS, Lq4, LSX series) and serves the same purpose: sealing MAP sensor port locations to prevent vacuum leaks and contamination. The short spacing version is for supercharger intakes with ports that are closer together, so it’s crucial to measure your port spacing before buying. Using the wrong spacing may not seal properly and could leak.
Like the other OywhC caps, this one is CNC-machined from T6061 aluminum with an anodized black finish. It’s a simple, effective part that can resolve idling issues caused by unmetered air entering through open ports. Installation takes seconds with no tools required. While it doesn’t add horsepower, it ensures that the air your supercharger is forcing into the engine is properly metered by the MAP sensor. For any LS supercharger setup, maintaining intake integrity is key to consistent performance and drivability. This cap is a small part that can save hours of troubleshooting.
- Short spacing fits tighter port layouts
- Black anodized for durability and aesthetics
- Prevents vacuum leaks
- Easy plug-and-play installation
- No performance gain
- Must measure port spacing
- Same function as other caps
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- 🚗【Application Scope】Supercharger MAP Vacuum Port Sealing Cap for GM LSA, LS9, LT4, LS, Lq4, LSX ( 4.8L 5.3L 6.0L) engines series. Note: Please check the compatible Port Hole Spacing before purchasing.
- 🚗【Product Functionality】 Can be used to Sealing 1 or both MAP sensor port locations, effectively seals air-leaking ports on the engine,Prevent dust, oil stains and other impurities from entering through the idle ports maintains optimal intake flow efficiency.
- 🚗【Precision Manufacturing】Crafted from T6061 aluminum alloy via CNC machining, with a anodized finish, ensuring precise dimensions, robust durability, and reliable sealing.
- 🚗【Easy to Install】No special tools are required. Simply replace old or damaged parts to keep the engine's intake system running properly and prevent excess air from entering.
- 🚗【Package List】 The package contains 1 X Port Sealing Cap, 1 X O ring and 1 X Installation hardware ⚠️ Small parts inside. Keep out of children's reach to prevent swallowing!
OywhC Supercharger MAP Vacuum Port Sealing Cap (Silver, Short Spacing) – Airtight Assurance
Brand: OywhC
A reliable short-spacing MAP sealing cap in silver that helps maintain a leak-free intake system on your supercharged LS engine.
The final variant in the OywhC MAP cap lineup is the silver anodized version with short hole spacing. It shares all the same materials and manufacturing quality—T6061 aluminum, CNC machining, and anodized finish—but with a bright silver look that matches many OEM engine components. This cap is intended for sealing MAP sensor ports on GM LSA, LS9, LT4, LS, Lq4, and LSX supercharged engines where the port spacing is short. As with the other caps, you should verify your port spacing before ordering to ensure a proper fit.
Functionally, it does exactly what you need: prevents dirt, oil, and air leaks from entering the intake through idle ports, maintaining optimal intake flow efficiency. It’s a simple part that solves a common problem on supercharged LS engines—leaking MAP ports can cause rough idle, surging, and false knock sensor readings. For the price, this cap is a worthwhile addition to any supercharger install. It gives you peace of mind that your intake system is sealed, allowing your MAP sensors to read correctly and your tune to stay accurate. Whether you choose silver or black depends on your aesthetic preference, but both deliver the same reliable seal.
- Bright silver finish matches many engine bays
- Same high-quality CNC aluminum construction
- Prevents air leaks and contamination
- Simple installation
- Does not increase power
- Requires correct spacing verification
- Multiple similar variants can cause confusion
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- 🚗【Application Scope】Supercharger MAP Vacuum Port Sealing Cap for GM LSA, LS9, LT4, LS, Lq4, LSX ( 4.8L 5.3L 6.0L) engines series. Note: Please check the compatible Port Hole Spacing before purchasing.
- 🚗【Product Functionality】 Can be used to Sealing 1 or both MAP sensor port locations, effectively seal the air-leaking ports on the engine,Prevent dust, oil stains and other impurities from entering through the idle ports maintains optimal intake flow efficiency.
- 🚗【Precision Manufacturing】Crafted from T6061 aluminum alloy via CNC machining, with a anodized finish, ensuring precise dimensions, robust durability, and reliable sealing.
- 🚗【Easy to Install】No special tools are required. Simply replace old or damaged parts to keep the engine's intake system running properly and prevent excess air from entering.
- 🚗【Package List】 The package contains 1 X Port Sealing Cap, 1 X O ring and 1 X Installation hardware ⚠️ Small parts inside. Keep out of children's reach to prevent swallowing!
Buyer’s Guide: What to Consider
Choosing the best supercharger setup for your LS engine involves more than just picking the biggest blower. You need to consider engine compatibility, power goals, installation complexity, and supporting modifications. Here are six key factors to help you make the right decision for your build.
- Engine Compatibility: Not all superchargers fit every LS engine. Check the head type (cathedral port vs. rectangular port), deck height, and whether the kit is designed for your specific displacement. Some kits are limited to 5.3L cathedral port engines, while others like the Speedmaster 6-71 fit a wide range of standard-deck LS blocks.
- Boost Level and Power Goals: Consider how much horsepower you want. Complete kits like the Edelbrock 1564 offer a safe 6 psi with 384 RWHP, while the Speedmaster 6-71 can add 45-55 percent more power. Higher boost requires stronger internal components and better fuel systems. Always match boost to your engine's rotating assembly strength.
- Kit Completeness vs. Custom Fabrication: Some products are full bolt-on kits (Speedmaster, Edelbrock), while others are components (Atomic intake, DJTuning adapter, AMR500). If you're not comfortable with fabrication, choose a complete kit. If you have advanced skills, adapter plates and individual parts allow for unique builds.
- Fuel System and Tuning Requirements: Any supercharger addition will require fuel system upgrades (larger injectors, pump) and professional tuning. Kits with carburetors need separate fueling, while EFI kits require a tune. Factor these costs into your budget. Also consider MAP sensor integrity—sealing caps help prevent false readings.
- Cooling and Lubrication: Supercharged engines run hotter. An oil cooler adapter kit (like the Bonbo) helps maintain oil temperatures. Intercooled superchargers (Edelbrock TVS) cool intake air. Non-intercooled roots blowers may need meth injection or larger radiators. Don't overlook heat management for reliability.
- Quality of Construction and Warranty: Look for billet aluminum parts, CNC machining, and anodized finishes for durability. The Speedmaster kit has heavy-duty bearing plates and a 12-month warranty. Smaller parts like MAP caps should be T6061 aluminum. Avoid cheap castings that may crack under boost.
Conclusion
Whether you’re after a complete bolt-on upgrade or piecing together a custom forced-induction system, there are products for every skill level and budget. The Speedmaster 6-71 kit delivers massive roots-style power for carbureted LS engines, while the Edelbrock 1564 offers a reliable Eaton TVS option for 5.3L cathedral port trucks. Accessories like the Atomic intake manifold, DJTuning adapter, and OywhC MAP caps fill in the gaps for a well-rounded build.
For most LS enthusiasts looking to add a supercharger, starting with a complete kit from Speedmaster or Edelbrock is the safest route. If you already have a Hellcat blower laying around, the DJTuning adapter is a clever way to put it on your cathedral port LS. And don’t forget the little things—oil cooler adapters and MAP port caps make a big difference in reliability. Choose based on your power targets, fabrication skills, and engine platform, and you’ll be well on your way to a supercharged LS that runs strong for years.