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The Chevy Big Block 427 is a powerhouse in the automotive world, revered for its performance and potential for modifications. One of the most effective upgrades you can make to enhance its horsepower is by installing an aftermarket intake manifold. In this article, we will explore the benefits of installing a Weiand Action Plus intake manifold, which can provide an impressive boost of up to 30 extra horsepower.
Understanding the Chevy Big Block 427
The Chevy Big Block 427 engine, introduced in the 1960s, is known for its robust design and exceptional performance. It features a large displacement, which allows for greater air and fuel intake, resulting in increased power. However, to fully unlock its potential, modifications such as upgrading the intake manifold are essential.
Why Upgrade to the Weiand Action Plus Intake Manifold?
The Weiand Action Plus intake manifold is specifically designed to improve airflow and enhance engine performance. Here are some reasons why this upgrade is beneficial:
- Increased Airflow: The Weiand Action Plus features larger runners and a more efficient design, allowing for improved airflow to the engine.
- Enhanced Performance: With better airflow, the engine can produce more power, translating to an increase in horsepower.
- Better Throttle Response: The design of the manifold improves throttle response, making the engine feel more responsive during acceleration.
- Compatibility: The Weiand Action Plus is compatible with a range of carburetors, making it a versatile choice for many setups.
Installation Process
Installing the Weiand Action Plus intake manifold requires some mechanical knowledge and the right tools. Here’s a step-by-step guide to help you through the process:
Tools and Materials Needed
- Weiand Action Plus intake manifold
- Intake manifold gasket set
- Torque wrench
- Socket set
- Wrench set
- Carburetor (if not reusing the old one)
- Engine oil (for gasket surfaces)
Step-by-Step Installation
Follow these steps to install the Weiand Action Plus intake manifold:
- Preparation: Begin by disconnecting the battery and removing any components obstructing access to the intake manifold, such as the air cleaner, carburetor, and throttle linkage.
- Remove the Old Manifold: Unbolt the existing intake manifold, taking care to keep track of the bolts and any other components that may need to be removed.
- Clean the Surface: Thoroughly clean the engine block surface to ensure a proper seal with the new gasket.
- Install New Gaskets: Apply a light coat of engine oil to the new gaskets and position them on the engine block.
- Place the Weiand Action Plus: Carefully position the Weiand Action Plus intake manifold onto the gaskets, ensuring proper alignment with the bolt holes.
- Tighten Bolts: Using a torque wrench, tighten the intake manifold bolts to the manufacturer’s specifications, following a crisscross pattern to ensure even pressure.
- Reassemble Components: Reattach the carburetor, throttle linkage, and any other components that were removed during the installation process.
- Reconnect the Battery: Once everything is reassembled, reconnect the battery and prepare to start the engine.
Tuning Your Engine After Installation
After installing the Weiand Action Plus intake manifold, tuning your engine is crucial to maximize performance. Here are some tuning tips:
- Adjust the Carburetor: Ensure that the carburetor is properly tuned to match the new airflow characteristics of the intake manifold.
- Check Timing: Verify that the ignition timing is set correctly for optimal performance.
- Monitor Air/Fuel Ratio: Use an air/fuel ratio gauge to ensure the engine is running efficiently.
Conclusion
Upgrading to a Weiand Action Plus intake manifold can significantly enhance the performance of your Chevy Big Block 427. With the potential for an additional 30 horsepower, this modification is a worthwhile investment for any performance enthusiast. By following the installation steps and tuning your engine properly, you can enjoy the benefits of improved power and responsiveness on the road or track.