Tools Required

J 36660-A  Torque Angle Meter

1. Clean the cylinder head gasket surfaces on the engine block.
2. Inspect the cylinder head locator dowel pins for proper installation.
3. Clean the cylinder head gasket surfaces on the cylinder head.
   Fig 1: Right Cylinder Head Locator Dowel Pin Installation Position

   Courtesy of GENERAL MOTORS CORP.

   Important:  Do not use any type sealer on the cylinder head gasket, unless specified.

4. Install the NEW cylinder head gasket in position over the cylinder head locator dowel pins.
   Fig 2: Right Cylinder Head Gasket

   Courtesy of GENERAL MOTORS CORP.
5. Install the cylinder head onto the engine block.

   Guide the cylinder head carefully into place over the dowel pins and the cylinder head gasket.

   Fig 3: Right Cylinder Head

   Courtesy of GENERAL MOTORS CORP.
6. Apply sealant GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent, to the threads of the cylinder head bolts.
7. Install the cylinder head bolts finger tight.
   Fig 4: Right Cylinder Head Bolts

   Courtesy of GENERAL MOTORS CORP.
   NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
8. Tighten the cylinder head bolts in sequence on the first pass.

   Tighten 

   Tighten the bolts in sequence on the first pass to 30 N.m (22 lb ft).

9. Use the J 36660-A  in order to tighten the cylinder head bolts in sequence on the final pass.

   Tighten 

   • Tighten the long bolts (1, 4, 5, 8, and 9) on the final pass in sequence to 75 degrees.
   • Tighten the medium bolts (12 and 13) on the final pass in sequence to 65 degrees.
   • Tighten the short bolts (2, 3, 6, 7, 10, and 11) on the final pass in sequence to 55 degrees.
   Fig 5: Right Cylinder Head Bolt Tightening Sequence

   Courtesy of GENERAL MOTORS CORP.
10. Install the spark plug wire support and bolts.

    Tighten 

    Tighten only the rear spark plug wire support bolt to 12 N.m (106 lb in).

11. Remove the front spark plug wire support bolt.

    The front spark plug wire support bolt is used to fasten the oil level indicator tube, and will be installed within the oil level indicator tube installation procedure.

    Fig 6: Spark Plug Wire Support & Bolts

    Courtesy of GENERAL MOTORS CORP.
12. Measure the NEW spark plugs for the proper gap. Adjust the spark plug gap if necessary.

    Specification 

    Spark plug gap to 1.52 mm (0.060 in).

13. Install the spark plugs.

    Tighten 

    • Tighten the spark plugs for a USED cylinder head to 15 N.m (11 lb ft).
    • Tighten the spark plugs for the initial installation of a NEW cylinder head to 30 N.m (22 lb ft).
    Fig 7: Right Spark Plug

    Courtesy of GENERAL MOTORS CORP.