Table of Contents
The C3 Corvette, produced from 1968 to 1982, is a classic American sports car that has captivated enthusiasts for decades. One of the most popular modifications for these vehicles is the installation of a performance camshaft and heads. This article will guide you through the process of achieving over 400 horsepower in your C3 Corvette.
Understanding the Basics
Before diving into the installation process, it’s essential to understand the components involved and how they contribute to your vehicle’s performance.
- Performance Camshaft: This component controls the timing and duration of the engine’s valves, allowing for increased airflow and better performance.
- Performance Cylinder Heads: Upgrading the cylinder heads can significantly improve airflow, combustion efficiency, and overall horsepower.
Tools and Materials Needed
Gathering the right tools and materials is crucial for a successful installation. Here’s a list of what you’ll need:
- Socket set
- Torque wrench
- Screwdrivers
- Engine hoist (if necessary)
- Performance camshaft
- Performance cylinder heads
- Gaskets and sealants
- Oil and coolant
Preparation Steps
Before you begin the installation, it’s important to take the following preparation steps:
- Disconnect the battery to prevent any electrical issues.
- Drain the engine oil and coolant to avoid spills during the process.
- Remove any components obstructing access to the engine, such as the air intake and exhaust manifolds.
Removing the Old Camshaft and Heads
The next step involves removing the existing camshaft and cylinder heads. Follow these instructions:
- Remove the valve covers and rocker arms to access the pushrods.
- Carefully pull out the pushrods and store them in a safe place.
- Remove the timing chain cover to access the camshaft.
- Unbolt and remove the old camshaft from the engine block.
- Next, unbolt the old cylinder heads and lift them off the engine.
Installing the New Camshaft and Heads
With the old components removed, it’s time to install the new performance camshaft and heads. Follow these steps:
- Carefully position the new camshaft into the engine block, ensuring proper alignment.
- Install the timing chain and cover, securing it with the appropriate bolts.
- Place the new cylinder heads onto the engine block, ensuring a proper seal with new gaskets.
- Torque the cylinder head bolts to the manufacturer’s specifications to ensure a secure fit.
- Reinstall the pushrods and rocker arms, adjusting them for proper clearance.
Finalizing the Installation
After successfully installing the new components, you’ll need to finalize the installation with these steps:
- Reinstall the valve covers and any other components that were removed.
- Refill the engine with new oil and coolant.
- Reconnect the battery and ensure all electrical connections are secure.
- Start the engine and listen for any unusual noises, checking for leaks.
Tuning Your Corvette
To fully realize the potential of your new camshaft and heads, tuning your Corvette is essential. This can include:
- Adjusting the fuel mixture for optimal performance.
- Setting the ignition timing to match the new components.
- Using a dynamometer to measure horsepower and fine-tune the engine settings.
Conclusion
Installing a performance camshaft and heads in your C3 Corvette can significantly enhance its power and performance, allowing you to achieve over 400 horsepower. With the right tools, preparation, and attention to detail, you can transform your classic Corvette into a high-performance machine.