Introduction

The pursuit of more horsepower is a common goal among automotive enthusiasts. The 800 supercharger kit offers a proven path to transform a stock engine into a 380-horsepower powerhouse. This comprehensive guide expands on the core 10 steps, providing detailed instructions, safety precautions, and expert tips to ensure a successful installation. Whether you are a seasoned DIY mechanic or a first-time installer, following these expanded steps will help you achieve reliable, high-performance results. Always consult your specific supercharger kit manual for torque values and component specifications, as variations exist between vehicle platforms.

Step 1: Gather Your Tools and Parts

Before lifting a wrench, ensure you have every required component. Missing parts mid-installation can lead to delays or improper assembly. Beyond the basic socket set and wrenches, invest in a quality torque wrench (ft-lb and in-lb ranges) and a set of metric and standard Allen keys.

Essential Tools

  • Socket set (3/8″ and 1/2″ drive) with deep sockets
  • Combination wrenches (8mm–19mm) and ratcheting wrenches
  • Flathead and Phillips screwdrivers
  • Torque wrench (0–100 ft-lb and 0–25 ft-lb for small fasteners)
  • Pry bar and rubber mallet
  • Gasket scraper and brake cleaner
  • Vacuum line pliers and hose clamp pliers

Supercharger Kit Contents

Verify your kit includes the supercharger unit, intake manifold adapter (if needed), gaskets, mounting brackets, bolts, belts, and all necessary hardware. Upgrade to ARP fasteners for high-stress areas. Also prepare ancillary performance parts:

  • New fuel injectors (flow-matched 42–60 lb/hr depending on your fuel system)
  • High-flow fuel pump (in-tank or inline, rated 255 LPH or higher)
  • High-performance air filter (dry or oiled cotton, sized for your intake tubing)
  • Intake manifold gaskets (OEM or upgraded MLS type)
  • Spark plugs (one heat range colder than stock)
  • Engine oil and coolant for post-installation fill

For additional resources, refer to the manufacturer’s installation guide on their official site. Lingenfelter Performance Engineering offers comprehensive supercharger instructions and technical support.

Step 2: Prepare Your Vehicle

Safety and preparation are paramount. Park the vehicle on a level concrete surface and engage the parking brake. Disconnect the negative battery terminal and wait 15 minutes before working on any electrical components to allow the ECU to discharge. Lift the vehicle if necessary using jack stands, never just a floor jack. Cover the fenders and intake opening with shop towels to prevent debris entry. Drain the engine coolant if your installation requires removing the coolant crossover pipe. Have a fire extinguisher rated for Class B/C nearby.

Pre-Installation Checks

  • Inspect the engine for oil leaks, coolant leaks, or worn serpentine belts. Fix any issues before proceeding.
  • Check the condition of your cooling system: radiator, hoses, and thermostat. A high-output supercharger generates additional heat that the stock cooling system may struggle to handle. Consider upgrading to an aluminum radiator and electric fans.
  • Verify that your exhaust system is free-flowing (at least 2.5″ diameter cat-back) to reduce backpressure. A restrictive exhaust will limit horsepower gains.
  • Ensure the vehicle’s engine is cool to the touch—hot components can cause burns and expand fasteners, leading to inaccurate torque readings.

Step 3: Remove the Stock Components

Label every connector and vacuum line with painter’s tape and a marker. Take photos of the factory arrangement before disassembly. Begin by removing the stock air intake assembly (airbox, MAF sensor, and intake tube). Next, remove the upper intake manifold. This may require unbolting throttle body brackets, fuel rail covers, and wiring harness clips. Remove the fuel rail only if necessary—if you are upgrading injectors, you will have to disconnect it later. Keep fuel lines capped to prevent contamination. Remove the stock intake manifold and discard the old gaskets. Clean the mating surfaces thoroughly using a gasket scraper and brake cleaner. Do not scratch the cylinder head or block surfaces.

Disassembly Tips

  • Use a shop vacuum to remove any debris that falls into the intake ports.
  • Replace the engine oil and filter at this point to ensure clean oil circulates after startup.
  • Inspect the supercharger drive belt routing diagram—often a sticker comes with the kit. Note how the new belt will wrap around the supercharger pulley and crank pulley.

Step 4: Install the Supercharger Kit

Now the core of the upgrade: mounting the supercharger. Apply a thin layer of high-temp silicone gasket maker to both sides of the intake manifold gaskets for leak prevention. Position the supercharger unit onto the lower intake manifold or adapter plate, aligning the drive pulley with the crank pulley. Hand-thread all mounting bolts before torquing them down. Follow the manufacturer’s torque sequence—typically starting from the center and working outward. Do not overtighten; aluminum housings can crack. Common torque values range from 18–22 ft-lb for M8 bolts.

Belt Installation

Install the drive belt according to the supplied routing diagram. Use a serpentine belt tool to tension the belt, ensuring it rides centered on all pulleys. If the kit includes a belt tensioner, adjust it to the specification. A loose belt will slip under load; an overly tight belt can damage the supercharger bearings. After installation, rotate the engine manually by turning the crank pulley bolt (using a 22mm socket and breaker bar) to verify the belt moves freely and the supercharger rotor spins without binding.

For guidance on proper belt tension, consult resources like Gates Corporation which provides belt tension specifications for many supercharger applications.

Step 5: Attach the Intake Manifold

If your supercharger kit includes a separate intake manifold (or adapter), install it now. Place a new OEM gasket or a reusable silicone gasket onto the supercharger outlet. Torque the manifold bolts in a crisscross pattern in three stages: first to 8 ft-lb, then 12 ft-lb, finally to the final torque value specified in your kit (often 15–18 ft-lb). Reinstall any coolant hoses, vacuum lines, and the throttle body. Replace the throttle body gasket if it is worn. Ensure the throttle plate opens and closes smoothly after reinstallation.

Reconnecting Sensors

Plug in the MAP sensor, IAT sensor, and any boost reference hoses. Some supercharger kits require drilling and tapping a vacuum port for the boost gauge or bypass valve. Use thread sealant on NPT fittings to prevent vacuum leaks. Double-check that all electrical connectors are seated and locked.

Step 6: Upgrade the Fuel System

Stock fuel injectors cannot supply enough fuel for 380 horsepower. Install high-performance injectors (e.g., Bosch 52 lb/hr or DeatschWerks 65 lb/hr) matched to your engine’s fuel pressure. If your kit includes a fuel pressure regulator, mount it on the return line. For returnless fuel systems, you may need a boost-referenced regulator or a plug-and-play injector upgrade with a tune. Do not skip the fuel pump upgrade—an OEM pump will starve at high RPM. Install a high-flow pump (e.g., Walbro 450LPH or AEM 340LPH) in the fuel tank. This step often requires dropping the tank or accessing the pump from under the rear seat. Replace the fuel filter as well. After reconnecting the fuel lines, prime the system by turning the ignition on and off (without starting) three times to pressurize the rails. Check for leaks at every connection.

To calculate the correct injector size for your horsepower goal, use an online fuel injector calculator or refer to DeatschWerks injector sizing guide. Always have your vehicle professionally tuned immediately after installation—superchargers without proper fuel mapping can cause detonation and engine failure.

Step 7: Install the New Air Filter

Replace the restrictive factory air box with a high-flow air filter attached directly to the supercharger inlet. Most kits include a mandrel-bent intake tube and a conical filter. Install the filter in a location that draws cool air from the fender or lower bumper—not hot engine bay air. Secure the filter with a stainless steel clamp. If the kit provides a heat shield, install it to block radiant heat from the radiator and exhaust manifold. Ensure the MAF sensor (if used) is oriented correctly per the manufacturer’s marks. An incorrectly positioned MAF can cause erratic idle and lean conditions.

Step 8: Connect All Hoses and Sensors

With the supercharger and intake manifold in place, reconnect every hose, sensor, and electrical connection that was removed. This includes the idle air control valve, throttle position sensor, crankcase ventilation lines, coolant hoses to the throttle body, and the supercharger bypass valve vacuum line. Use new OEM hose clamps or worm-gear clamps. For vacuum lines, use silicone hoses of appropriate inner diameter (typically 3.5mm or 5mm). Tuck wiring harnesses away from moving parts and sharp edges. Use zip ties to secure loose wires. Reconnect the battery cables—but wait to start the engine.

Final Checks Before Startup

  • Verify all fluid levels: engine oil, coolant, power steering fluid, and brake fluid.
  • Check for any loose bolts or disconnected hoses.
  • Inspect the supercharger oil level (if separate from engine oil). Some units have a dedicated oil reservoir. Fill with manufacturer-recommended synthetic gear oil.
  • Turn the engine over by hand at least two full revolutions to ensure no piston-to-valve interference.
  • Have a fire extinguisher and a helper nearby for the first startup.

Step 9: Reconnect the Battery

Reconnect the negative battery terminal, then the positive terminal. Clean the terminals with a wire brush and apply dielectric grease to prevent corrosion. If your vehicle has a battery tender, plug it in to maintain voltage during the initial crank cycle. Turn the key to the “on” position (do not start) and listen for the fuel pump prime. Cycle the key three times to build fuel pressure. Check for fuel leaks at all injectors and fuel rail connections. If you installed a boost gauge, verify it reads vacuum during key-on (or zero if the vacuum port is not yet exposed to intake vacuum).

Step 10: Start the Engine and Test

Start the engine with the throttle closed. Allow it to idle at a moderate speed (1,000–1,200 RPM) for 30 seconds while monitoring the oil pressure gauge. Check for unusual knocking, rattling, or whistling sounds. A slight whine from the supercharger is normal, but a loud scraping sound indicates rotor contact or belt misalignment—shut it down immediately if this occurs. Let the engine reach operating temperature (180–200°F). Check for coolant and oil leaks. Once warm, turn it off and re-torque the intake manifold bolts and supercharger mounting bolts to spec after the engine has heat-cycled.

Break-In and Tuning

Do not drive the car hard during the first 50 miles. This allows the supercharger gears and belts to seat. During this period, monitor your wideband oxygen sensor (if equipped) or use a scan tool to watch fuel trims. If the engine runs lean or pings, do not operate at high boost. Have the vehicle tuned on a chassis dynamometer by a professional. A custom tune will optimize ignition timing and air/fuel ratio for maximum safe power (380 HP at the crank typically requires 8–10 psi of boost on a 3.5L or larger engine). After tuning, perform a road test: accelerate gently to 3,000 RPM, then gradually increase load. Listen for detonation (a metallic rattle). Under full throttle, the engine should pull strong without hesitation. Check for belt slip under high RPM—if you hear screeching, increase tension or upgrade to a pulley with more wrap.

For tuning resources, reputable shops like Tuning Tech offer remote calibration services for many vehicles. Also consult the Superchargers Online knowledge base for installation tips and boost management strategies.

Conclusion

By following these expanded 10 steps with careful attention to detail, you can successfully install an 800 supercharger and achieve 380 horsepower from a previously stock engine. The key to long-term reliability lies in proper fuel system upgrades, meticulous assembly, and professional tuning. Remember to perform regular maintenance: change the supercharger oil every 30,000 miles, inspect the belt for wear, and monitor boost pressure. Enjoy the enhanced throttle response and the thrill of a high-performance vehicle. For ongoing support, join marque-specific forums and supercharger owner groups to share experiences and troubleshoot common issues. Drive safely and respect the increased power—your vehicle is now a whole new beast.