Corvette 1997-2005

Cylinder Head

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Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove or disconnect the following:
    NOTE
    The cylinder head bolts are NOT reusable.



    Negative battery cable
     
    Rocker arm covers
     
    Rocker arms, refer to -Rocker arms, removal & installation- section.
     
    Pushrods
     
    Engine coolant air bleed pipe assembly
     
    Alternator mounting bracket, if removing left side
     
    Exhaust manifold, refer to -Exhaust Manifold- section
     
    Remove the intake manifold. Refer to Intake Manifold Replacement
     
    Remove the engine wiring harness ground bolt from the rear of the left cylinder head
     
    Reposition the engine wire harness ground strap away from the cylinder head
     
    Remove the cylinder head bolts
     



    Remove the cylinder head and gasket
     

  6.  

To install:

Click image to see an enlarged view

Fig. Cylinder head bolt torque sequence

  1. Clean all dirt, debris, and coolant from the engine block cylinder head bolt holes. Failure to remove all foreign material may result in damaged threads, improperly tightened fasteners or damage to components.
    NOTE
    Do not use any type of sealant on the cylinder head gasket, unless specified.

  2.  
  3. Install the new cylinder head gasket onto the locating pins.
    NOTE
    The cylinder head gaskets must be installed in the proper direction and position.

  4.  
  5. Install the cylinder head onto the locating pins and gasket and tighten the bolts in sequence as follows:
    NOTE
    New cylinder head bolts must be used.

  6.  
  7. Tighten the cylinder head bolts.
    1. M11 bolts (1-10): 22 ft. lbs. (30 Nm)
    2.  
    3. M11 bolts (1-10): plus 90 degrees
    4.  
    5. M11 bolts (1-10): plus 70 degrees.
    6.  
    7. M8 bolts (11-15): 22 ft. lbs. (30 Nm) Begin with the center bolt (11) and alternating side-to-side, work outward tightening all of the bolts.
    8.  

  8.  
  9. Position the engine ground strap against the cylinder head, if installing left side.
  10.  
  11. Install or connect the following:

    Engine wiring harness ground bolt and tighten to 24 ft. lbs. (32 Nm)
     
    Exhaust manifold, refer to -Exhaust Manifold- section
     
    Alternator mounting bracket, if installing left side
     
    Engine coolant air bleed pipe assembly
     
    Pushrods
     
    Rocker arms, refer to -Rocker arms, removal & installation- section
     
    Rocker arm covers
     
    Negative battery cable
     

  12.  
  13. Refill the cooling system.
  14.  
  15. Start the engine and check for leaks.
  16.  

6.0L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Rocker arms
     
    Pushrods
     
    Engine coolant air bleed pipe assembly
     
    Alternator mounting bracket, if removing left side
     
    Exhaust manifold
     
    Oil level indicator mounting bolt, if removing right side
     
    Engine wiring harness from the rear of the left cylinder head
     

  6.  
  7. Reposition the engine ground strap away from the cylinder head, if removing left side.
  8.  
  9. Remove the cylinder head mounting bolts and discard.
  10.  
  11. Remove the cylinder head and discard the gasket.
  12.  

To install:

Click image to see an enlarged view

Fig. Cylinder head bolt torque sequence-All engines


NOTE
New cylinder head bolts must be used.

  1. Install the new cylinder head gasket onto the locating pins.
  2.  
  3. Install the cylinder head onto the locating pins and gasket and tighten the bolts in sequence as follows:
    1. M11 bolts (1-10): 22 ft. lbs. (30 Nm)
    2.  
    3. M11 bolts (1-10): plus 90 degrees
    4.  
    5. M11 bolts (1-10): plus 70 degrees.
    6.  
    7. M8 bolts (11-15): 22 ft. lbs. (30 Nm)
    8.  

  4.  
  5. Position the engine ground strap against the cylinder head, if installing left side.
  6.  
  7. Install or connect the following:

    Engine wiring harness ground bolt and tighten to 24 ft. lbs. (32 Nm)
     
    Oil level indicator mounting bolt, if installing right side. Tighten to 18 ft. lbs. (25 Nm).
     
    Exhaust manifold
     
    Alternator mounting bracket, if installing left side
     
    Engine coolant air bleed pipe assembly
     
    Rocker arms
     
    Pushrods
     
    Negative battery cable
     

  8.  
  9. Refill the cooling system.
  10.  
  11. Start the engine and check for leaks.
  12.  

 
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