Quick Overview
- The camshaft, a crucial component within your LS engine, controls the opening and closing of the valves, dictating when the engine breathes in and exhales.
- By optimizing the timing of valve events, you can maximize the amount of air and fuel entering the cylinders, resulting in a noticeable boost in horsepower and torque.
- If the valve lift doesn’t match the manufacturer’s specifications, adjust the timing chain tensioner or the camshaft timing gear to achieve the desired valve timing.
For any serious LS engine enthusiast, the pursuit of ultimate performance often leads to the realm of camshaft upgrades. But simply swapping in a new cam isn’t enough. To truly unlock the potential of your LS engine, you need to understand the art of “degreeing” the camshaft. This process ensures proper valve timing, maximizing power and efficiency. This guide will demystify the process of how to degree camshaft LS, providing a step-by-step approach for achieving optimal results.
Understanding the Basics: Why Degree a Camshaft?
The camshaft, a crucial component within your LS engine, controls the opening and closing of the valves, dictating when the engine breathes in and exhales. A properly degreed camshaft ensures that the valves open and close at the precise moments to optimize the combustion process. This translates to:
- Increased Power: By optimizing the timing of valve events, you can maximize the amount of air and fuel entering the cylinders, resulting in a noticeable boost in horsepower and torque.
- Improved Fuel Efficiency: Precise valve timing can lead to more complete combustion, reducing wasted fuel and improving fuel economy.
- Smoother Running: Proper camshaft timing ensures a smoother idle and more consistent engine operation, especially at higher RPMs.
Essential Tools for the Job
Before embarking on your camshaft degreeing journey, you’ll need to gather the necessary tools:
- Timing Degree Wheel: This specialized tool allows you to accurately measure the crankshaft’s rotation and determine valve timing.
- Dial Indicator: Used to measure valve lift and ensure proper camshaft installation.
- Valve Spring Compressor: Necessary for compressing the valve springs to remove and install the camshaft.
- Torque Wrench: To tighten camshaft bearings and other fasteners to the manufacturer’s specifications.
- Camshaft Degreeing Kit: A comprehensive kit that includes a timing degree wheel, dial indicator, and other essential tools.
- Service Manual: Your LS engine’s service manual provides detailed specifications and procedures for camshaft degreeing.
Step-by-Step Guide to Degreeing Your LS Camshaft
Now, let’s dive into the step-by-step process of degreeing your LS camshaft:
1. Preparation:
- Remove the Valve Covers: This provides access to the camshaft and its components.
- Remove the Timing Cover: This exposes the timing chain and gears, allowing you to manipulate the crankshaft and camshaft positions.
2. Install the Timing Degree Wheel:
- Align the Degree Wheel: Ensure the degree wheel is securely mounted to the crankshaft and aligned with the timing marks on the crankshaft.
- Check for Zero Degree Alignment: Rotate the crankshaft until the degree wheel’s zero-degree mark aligns with the timing mark on the engine block.
3. Install the Camshaft:
- Install the Camshaft: Carefully install the new camshaft into the engine block, ensuring that the cam lobes are properly aligned with the valve lifters.
- Tighten the Camshaft Bearings: Use a torque wrench to tighten the camshaft bearings to the manufacturer’s specifications.
4. Set the Initial Valve Timing:
- Rotate the Crankshaft: Rotate the crankshaft until the degree wheel’s zero-degree mark aligns with the timing mark on the engine block.
- Measure Valve Lift: Use the dial indicator to measure the lift of each valve at this position.
- Adjust Valve Timing: If the valve lift doesn’t match the manufacturer’s specifications, adjust the timing chain tensioner or the camshaft timing gear to achieve the desired valve timing.
5. Fine-Tuning the Valve Timing:
- Rotate the Crankshaft: Rotate the crankshaft in increments, measuring the valve lift at each position.
- Adjust Timing for Optimal Performance: Based on the valve lift measurements, fine-tune the camshaft timing to achieve optimal power and efficiency.
6. Reassemble the Engine:
- Install the Timing Cover: Carefully reinstall the timing cover, ensuring that the timing chain and gears are properly aligned.
- Install the Valve Covers: Reinstall the valve covers, ensuring that they are properly sealed.
7. Final Check:
- Perform a Leak Check: Ensure that there are no leaks from the timing cover or valve covers.
- Start the Engine: Start the engine and listen for any unusual noises or vibrations. If everything sounds normal, you’ve successfully degreed your LS camshaft.
Essential Tips for Success
- Consult Your Service Manual: Always refer to your LS engine’s service manual for specific specifications and procedures related to camshaft degreeing.
- Use High-Quality Tools: Investing in a quality timing degree wheel, dial indicator, and other tools will ensure accurate measurements and a successful degreeing process.
- Take Your Time: Degreeing a camshaft is a meticulous process that requires patience and attention to detail. Don’t rush the process and take your time to ensure everything is done correctly.
The Advantages of a Properly Degreed Camshaft
A properly degreed camshaft can deliver a range of benefits, including:
- Enhanced Performance: Optimize valve timing for maximum power and torque output.
- Improved Fuel Efficiency: Minimize wasted fuel and achieve better fuel economy.
- Smoother Engine Operation: Enhance idle quality and ensure consistent engine operation across the RPM range.
- Reduced Emissions: Optimize combustion for cleaner exhaust emissions.
Final Thoughts: Beyond the Basics
Degreeing a camshaft is a critical step in maximizing the performance of your LS engine. By understanding the process and following the steps outlined in this guide, you can unlock the full potential of your camshaft upgrade. Remember, precision and attention to detail are key to achieving optimal results and enjoying the benefits of a properly degreed camshaft.
What You Need to Learn
Q: What are the risks of not degreeing a camshaft?
A: Not degreeing a camshaft can lead to poor performance, reduced fuel economy, and even engine damage. Improper valve timing can result in incomplete combustion, reduced power, and increased emissions.
Q: How often should I degree my camshaft?
A: You generally only need to degree your camshaft once after installing a new camshaft. However, if you make any modifications to the timing chain or gears, you may need to re-degree the camshaft.
Q: Can I degree my camshaft without removing the engine from the vehicle?
A: In some cases, you may be able to degree your camshaft without removing the engine. However, this is often more challenging and may require specialized tools and techniques. It’s best to consult your service manual or a qualified mechanic for guidance.
Q: What are some common mistakes to avoid when degreeing a camshaft?
A: Common mistakes include improper alignment of the degree wheel, inaccurate valve lift measurements, and neglecting to tighten the camshaft bearings to the correct specifications.
Q: What are some resources for learning more about camshaft degreeing?
A: You can find valuable information in your LS engine‘s service manual, online forums, and YouTube videos. However, it’s always best to consult a qualified mechanic or professional for guidance on complex procedures.