Table of Contents
The B-body Mopar 426 HEMI intake manifold is a significant upgrade for those looking to enhance the performance of their classic muscle car. This step-by-step guide will walk you through the installation process, ensuring you achieve increased power and efficiency from your engine.
Tools and Materials Needed
- Socket set
- Torque wrench
- Gasket scraper
- New intake manifold gasket
- HEMI intake manifold
- Engine oil
- Rags for cleanup
Preparation Steps
Before starting the installation, ensure that your engine is cool to prevent burns and damage. Gather all the tools and materials listed above. It’s also advisable to have a service manual for your specific B-body model handy for reference.
Disconnect the Battery
Start by disconnecting the negative terminal of the battery. This will prevent any electrical shorts or shocks during the installation process.
Remove the Old Intake Manifold
Next, remove the old intake manifold. Begin by disconnecting any vacuum lines, electrical connectors, and fuel lines attached to the manifold. Use a socket set to unbolt the manifold from the engine. Carefully lift the old manifold off, taking care not to damage any surrounding components.
Clean the Surface
Once the old manifold is removed, clean the intake surface on the engine block thoroughly. Use a gasket scraper to remove any remnants of the old gasket. Ensure that the surface is smooth and free of debris to ensure a proper seal with the new manifold.
Installing the New HEMI Intake Manifold
With the surface prepared, it’s time to install the new HEMI intake manifold. Follow these steps carefully for a successful installation.
Apply Engine Oil
Before placing the new manifold, apply a light coat of engine oil to the threads of the bolts. This will help ensure a proper seal and make future removal easier.
Position the New Manifold
Carefully position the new intake manifold onto the engine block. Ensure that it aligns correctly with the bolt holes. Take care to avoid any misalignment that could lead to leaks or performance issues.
Install the Bolts
Begin installing the bolts to secure the manifold. Start with the center bolts and work your way outwards in a crisscross pattern. This will help distribute the pressure evenly across the manifold.
Torque Specifications
Using a torque wrench, tighten the bolts to the manufacturer’s specifications. This is crucial to avoid warping the manifold or creating leaks. Refer to your service manual for the correct torque values.
Reconnecting Components
After the manifold is secured, it’s time to reconnect all the components that were removed earlier.
Reconnect Vacuum and Fuel Lines
Reattach any vacuum lines and electrical connectors to the intake manifold. Ensure that all connections are secure and free of leaks.
Reconnect the Battery
Once everything is reconnected, attach the negative terminal back to the battery. This will restore power to the vehicle.
Final Checks and Testing
Before taking your vehicle for a test drive, perform a few final checks to ensure everything is in order.
Check for Leaks
Start the engine and allow it to idle. Carefully inspect the intake manifold for any signs of leaks. If you notice any, turn off the engine and address the issue before proceeding.
Test Drive
After confirming there are no leaks, take your vehicle for a test drive. Pay attention to the engine’s performance and listen for any unusual sounds. The new intake manifold should provide a noticeable increase in power and responsiveness.
Conclusion
Installing a B-body Mopar 426 HEMI intake manifold is a rewarding project that can significantly enhance your vehicle’s performance. By following these steps, you can ensure a successful installation and enjoy the benefits of increased power on the road.