73. Camshaft Installation

IMPORTANT: Replace the valve lifters when a new camshaft is installed.





1. Install the camshaft sprocket key.





2. Install the camshaft sprocket spacer, with the ID chamfer facing the camshaft.





3. Install the camshaft.
3.1. Coat the camshaft lobes with Lubricant GM P/N 1052367, or the equivalent.
3.2. Lubricate the camshaft bearing journals with engine oil.
3.3. Carefully insert the camshaft into the block, in order to avoid damage to the camshaft bearings.
4. Install the thrust bearing.

NOTICE: Refer to Fastener Notice in Service Precautions.

5. Install the thrust bearing bolts.
^ Tighten the bolts to 25 Nm (17 ft. lbs.).