The 351 Cleveland engine is a popular choice among car enthusiasts and mechanics, particularly for its performance capabilities. When working on this engine, knowing the correct exhaust manifold bolt size is crucial for proper assembly and maintenance.

Exhaust Manifold Bolt Specifications

For the 351 Cleveland engine, the exhaust manifold bolts typically have the following specifications:

  • Thread Size: 3/8-16 inches
  • Bolt Length: Commonly, a length of 1 1/4 inches is used for the exhaust manifold bolts, although variations may exist based on specific applications.

These bolts are designed to secure the exhaust manifold to the cylinder head effectively, ensuring a tight seal to prevent exhaust leaks.

Important Considerations

When selecting bolts for your 351 Cleveland engine, consider the following:

  • Material: Opt for high-quality steel bolts to withstand high temperatures and stresses.

  • Washer Use: It is advisable to use flat washers with the bolts to distribute torque evenly and prevent galling, especially if using aluminum manifolds.

  • Torque Specifications: Proper torque settings are essential for ensuring that the bolts are neither too loose nor overtightened. Generally, torque specifications can range from 12 to 16 ft-lbs, but always refer to specific service manuals for your vehicle model.

FAQs About 351 Cleveland Exhaust Manifold Bolts

    • What is the thread size for 351 Cleveland exhaust manifold bolts?
      The thread size is typically 3/8-16 inches.
    • What length should I use for these bolts?
      A common length is 1 1/4 inches, but it may vary based on specific applications.
    • Do I need washers with these bolts?
      Yes, using washers is recommended to distribute torque and prevent damage to the manifold.

Understanding these specifications will help ensure that your maintenance or restoration project goes smoothly. Whether you are a seasoned mechanic or a DIY enthusiast, having the right information about your 351 Cleveland exhaust manifold bolt size is essential for optimal performance.