Tools Required

J 36660-A Torque Angle Meter

1. Install the lower intake manifold gaskets.



2. Coat the ends of the push rods using prelube GM P/N 1052365 or the equivalent.

Important: The intake valve push rods measure 144 mm (5.75 in) in length, (yellow).

3. Install the push rods in their original location.

The exhaust valve push rods measure 152.5 mm (6.0 in) in length, (green).




4. Coat the rocker arm friction surfaces using prelube GM P/N 1052365 or the equivalent.

Important: Shims may be required under the valve rocker arm pedestals if reconditioning has been performed on the cylinder head or its components. Refer to Cylinder Head Cleaning and Inspection .

5. Install the valve rocker arms in their original positions.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

6. Install the valve rocker arm bolts.

Tighten
Use the J 36660-A to tighten the valve rocker arm bolts to 19 N·m (14 lb ft) plus 30 degrees.