How to Install a Comp Cams Xe268h on Your Pontiac 400: Step-by-step Tutorial

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Installing a Comp Cams XE268H camshaft on your Pontiac 400 can significantly enhance its performance. This guide provides a step-by-step tutorial to help you through the installation process. Before you begin, ensure you have all the necessary tools and parts ready.

Tools and Materials Needed

  • Comp Cams XE268H camshaft
  • Socket set
  • Torque wrench
  • Screwdriver set
  • Camshaft installation tool
  • Engine oil
  • Rags for cleanup
  • Gasket set
  • Timing chain or gear set
  • New lifters

Preparation Steps

Before beginning the installation, it’s crucial to prepare your workspace and the engine. Follow these preparation steps:

  • Disconnect the battery to prevent any electrical issues.
  • Remove the hood for easier access to the engine.
  • Drain the engine oil and coolant.
  • Remove any components obstructing access to the camshaft, such as the intake manifold and timing cover.

Removing the Old Camshaft

Once the engine is prepared, you can proceed to remove the old camshaft. Here’s how:

  • Remove the timing chain or gear set by loosening the bolts.
  • Take out the old lifters and set them aside.
  • Unbolt the camshaft from the engine block.
  • Carefully slide the old camshaft out of the engine.

Installing the Comp Cams XE268H

With the old camshaft removed, you can now install the new Comp Cams XE268H. Follow these steps:

  • Apply a thin layer of engine oil to the new camshaft and lifters.
  • Carefully slide the new camshaft into the engine block.
  • Align the camshaft with the timing gear or chain.
  • Secure the camshaft by tightening the bolts to the manufacturer’s specifications.
  • Install the new lifters in their respective positions.

Reassembling the Engine

After installing the new camshaft, it’s time to reassemble the engine. Follow these steps:

  • Reinstall the timing chain or gear set, ensuring proper alignment.
  • Replace the intake manifold, ensuring a good seal with new gaskets.
  • Reconnect any components that were removed earlier, such as the battery and hood.
  • Refill the engine with fresh oil and coolant.

Final Checks and Start-Up

Before starting the engine, perform these final checks:

  • Double-check all connections and bolts for tightness.
  • Ensure there are no oil or coolant leaks.
  • Verify that the timing is set correctly.

Once everything is in order, start the engine and let it idle for a few minutes. Listen for any unusual noises and monitor oil pressure. If everything sounds good, take your Pontiac 400 for a test drive to experience the performance boost from your new camshaft!

Conclusion

Installing a Comp Cams XE268H camshaft on your Pontiac 400 can be a rewarding project that enhances your vehicle’s performance. By following this step-by-step tutorial, you can ensure a successful installation and enjoy the benefits of your upgraded engine.