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The Holley Hi-Ram Fuel System is a popular upgrade for Mustang GT enthusiasts looking to boost performance. This system can potentially add up to 75 horsepower, making it an attractive option for those looking to enhance their vehicle’s capabilities. In this article, we will provide a detailed step-by-step guide on how to install the Holley Hi-Ram Fuel System in your Mustang GT.
Tools and Materials Needed
- Holley Hi-Ram Fuel System Kit
- Socket set
- Torque wrench
- Ratchet and extensions
- Flathead and Phillips screwdrivers
- Fuel line disconnect tool
- Gasket scraper
- Shop towels
- Engine oil
- Safety goggles
- Gloves
Preparation Steps
Before starting the installation, it’s essential to prepare your workspace and vehicle. Follow these steps to ensure a smooth process:
- Park the Mustang GT on a flat surface and engage the parking brake.
- Disconnect the negative battery cable to prevent any electrical issues.
- Remove any engine covers or components that may obstruct access to the intake manifold.
- Drain the fuel system by removing the fuel pump fuse and cranking the engine until it stalls.
Removing the Stock Intake Manifold
With the preparation complete, you can now begin removing the stock intake manifold. Follow these steps:
- Disconnect the throttle body and any sensors attached to the stock manifold.
- Use the fuel line disconnect tool to remove the fuel lines from the injectors.
- Unbolt the stock intake manifold using the socket set, taking care to keep track of the bolts.
- Carefully lift the manifold off the engine and set it aside.
Preparing the Holley Hi-Ram Fuel System
Before installing the Holley Hi-Ram Fuel System, there are a few preparation steps to complete:
- Inspect the new manifold for any defects or damage.
- Apply a thin layer of engine oil to the O-rings of the fuel injectors.
- Install the fuel rails onto the Hi-Ram manifold, ensuring they are secure.
- Attach the fuel injectors to the fuel rails if not already pre-installed.
Installing the Holley Hi-Ram Fuel System
With the Hi-Ram manifold prepared, it’s time to install it onto the engine:
- Carefully position the Hi-Ram manifold onto the engine, aligning it with the intake ports.
- Install the bolts and torque them to the manufacturer’s specifications.
- Reconnect the throttle body and any sensors that were previously disconnected.
- Reconnect the fuel lines to the injectors, ensuring a secure fit.
Final Steps and Testing
Once the Hi-Ram Fuel System is installed, follow these final steps:
- Reinstall any engine covers or components that were removed.
- Reconnect the negative battery cable.
- Turn the ignition key to the “on” position without starting the engine to prime the fuel system.
- Check for any fuel leaks around the injectors and fuel lines.
- Start the engine and let it idle for a few minutes to ensure proper operation.
Conclusion
Installing the Holley Hi-Ram Fuel System can significantly enhance the performance of your Mustang GT. By following this step-by-step guide, you can achieve impressive horsepower gains and enjoy the thrill of driving a more powerful vehicle. Always remember to adhere to safety precautions and consult professional assistance if needed.