1. Choosing a Supercharger System:
* Kit vs. Custom: Your best bet is to find a pre-assembled supercharger kit specifically designed for your 1999 Silverado 1500's engine (likely a Vortec 4.3L, 5.0L, or 5.7L). These kits are engineered to fit and include necessary components. A custom setup is much more complex and requires extensive fabrication and tuning skills.
* Manufacturer: Several reputable manufacturers produce supercharger kits for GM trucks of that era, such as Magnuson, Edelbrock, Vortech, and ProCharger. Research their offerings and compare features, power gains, and warranty.
* Size/Power Level: Superchargers come in various sizes, affecting the boost pressure and resulting horsepower increase. Consider your goals and the engine's capabilities. A larger supercharger will produce more power but may require more significant modifications.
2. Required Components (generally included in a kit):
* Supercharger unit: The heart of the system.
* Manifold: To connect the supercharger to the intake.
* Belts and pulleys: To drive the supercharger.
* Intercooler (often): To cool the compressed air before it enters the engine.
* Boost gauge: To monitor boost pressure.
* Fuel system upgrades (usually necessary): A supercharger significantly increases the fuel demands of the engine. You'll likely need higher-flowing fuel injectors, a fuel pump, and possibly a larger fuel rail.
* Air intake system modifications: To provide sufficient air to the supercharger.
* ECU tuning (absolutely essential): The engine's computer must be reprogrammed to deliver the correct fuel and ignition timing for the increased power output. This is crucial to avoid damaging the engine.
3. Installation Process (general steps):
* Preparation: Disconnect the battery, remove necessary components for access (air intake, etc.).
* Mounting the Supercharger: Install the supercharger and manifold according to the kit's instructions.
* Plumbing: Connect all necessary hoses and fittings for the intercooler (if applicable), air intake, and boost control.
* Wiring: Connect any necessary wiring for sensors and gauges.
* Fuel system upgrades: Install the upgraded fuel components.
* Belt routing: Route the belts to drive the supercharger.
* ECU Tuning: This is critically important. You'll need professional dyno tuning to optimize fuel and ignition parameters to prevent engine damage. A handheld tuner alone is insufficient for optimal performance and reliability.
4. Considerations:
* Cost: Supercharger kits and professional installation can cost several thousand dollars.
* Stress on Engine Components: A supercharger puts additional stress on the engine's internal parts, such as the connecting rods, pistons, and crankshaft. Consider strengthening these components for higher reliability.
* Warranty: Installing a supercharger will likely void your vehicle's powertrain warranty.
* Emissions Compliance: Depending on your region, modifications like this might not comply with emission regulations.
Recommendation: Unless you have significant mechanical experience and access to the right tools, do not attempt this installation yourself. Take your Silverado to a reputable performance shop specializing in GM trucks. They have the expertise and equipment for proper installation, tuning, and safety checks. Improper installation can severely damage your engine.
