1. Preparation:
* Disconnect the battery: This is crucial for safety.
* Drain the engine oil: Completely drain the oil pan. This makes the process much cleaner.
* Remove the valve covers: This gives you access to the rocker arms and pushrods.
* Remove the rocker arms and pushrods: Carefully remove the rocker arms and pushrods, keeping them organized so you can reinstall them correctly. You might want to label them or take pictures to ensure proper reassembly. Use a magnetic parts tray to prevent dropping small parts.
2. Removing the Lifters:
There are two main methods, depending on the type of lifter:
* Hydraulic Lifters (most common): These are typically removed by using a lifter removal tool. These tools come in various designs, but generally consist of a magnetic pickup tool, a small hook or claw to grab the lifter, or a specialized tool designed to compress the lifter spring slightly allowing for easier removal. Be extremely careful not to damage the lifter. A damaged lifter will need replacing. Work slowly and steadily.
* If you don't have a tool: You can sometimes carefully use long-nose pliers or a small flat-head screwdriver, but this is risky and can easily damage the lifter. Try to insert the tool between the lifter and the lifter bore. Gentle upward pressure should be enough for most lifters.
* Solid Lifters (less common on a 350): These are generally easier to remove. They are typically just pressed into the lifter bore and can often be removed by hand after you remove the pushrods. A slight tap from a small hammer might be needed, but only tap the lifter gently to avoid damaging it or the block.
3. Post-Removal:
* Inspect the lifters: Carefully inspect each lifter for wear, damage, or corrosion. Replace any damaged or questionable lifters.
* Clean the lifter bores: Use a clean shop rag or a brush to clean out any debris from the lifter bores in the engine block.
Important Considerations:
* Lubrication: Keep the lifters lubricated during the removal process to prevent damage. A light coating of engine oil is recommended.
* Order of Removal: Keep track of which lifter came from which cylinder. This is crucial for proper reinstallation.
* Damage Prevention: Avoid dropping the lifters or scratching them. This could lead to engine problems later.
Disclaimer: This is general guidance. Improper procedures can cause engine damage. If you are not comfortable performing this task, seek the assistance of a qualified mechanic. Refer to a shop manual specific to your year and model of Chevy 350 for the most accurate and detailed instructions.
