GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1996 🢒 Corvette 🢒 Engine 🢒 Engine Exhaust 🢒 Valve Rocker Arm, Push Rod, and Stud Replacement

Removal Procedure
  1. Remove the valve rocker arm cover.
    2. • In order to remove the left valve rocker arm cover, refer to Valve Rocker Arm Cover Replacement .
    • In order to remove the right valve rocker arm cover, refer to Valve Rocker Arm Cover Replacement .

    Object Number: 11481 Size: SH
  2. For LT1 engines, remove the following components from the cylinder head:
    3. 2.1. The valve rocker arm nuts (1)
    2.2. The valve rocker arm balls (2)
    2.3. The valve rocker arms (3)
    2.4. The valve rocker arm studs (4)

    Object Number: 22768 Size: SH
  3. For LT4 engines, remove the valve rocker arms and rocker arm nuts.

    4. Object Number: 22766 Size: SH
  4. Remove the valve rocker arm pushrods.
  5. Place the following parts in a rack so that they can be reinstalled in their original locations:
    6. • The valve rocker arms
    • The valve rocker arm balls (if applicable)
    • The valve pushrods
  6. Inspect the rocker arms, studs, and pushrods. Refer to Valve Train Components Cleaning and Inspection .

Installation Procedure

    Object Number: 11481 Size: SH
  1. Coat the valve rocker arm and valve rocker arm ball bearing surfaces with prelube GM P/N 1052365 or equivalent. Install these components and the pushrods in the locations from which they were removed.
  2. Install the valve pushrods. Ensure that the valve pushrods seat in the valve lifter sockets.
  3. Install the valve rocker arms.
  4. For LT1 engines, install the valve rocker arm balls and nuts.
  5. For LT1 engines, adjust the rocker arm nuts until all lash is eliminated.

    6. Object Number: 22768 Size: SH
  6. For LT4 engines, install the valve rocker arm nuts.

    7. Tighten
    Tighten the valve rocker arm nuts to 25 N·m (18 lb ft).

    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.