GM Camaro 1967-1981 Repair Guide

Mechanical Lifters

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See Figure 1

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Fig. Fig. 1: When adjusting the valve lash on engines equipped with mechanical lifters, 0.024 in. and 0.030 in. feeler gauges are necessary

Relatively few engines ever used in Camaros utilize mechanical valve lifters. Those that do are listed in the following chart.

  1. Run the engine until it has reached normal operating temperature.
  2.  
  3. Set the engine to the No. 1 firing position.
  4.  
  5. Adjust the clearance between the valve stems and the rocker arms with a feeler gauge. Check the Mechanical Valve Lifter Clearance Chart for the proper clearance. Adjust the following valves in the No. 1 firing position: Intake No. 2, 7, Exhaust No. 4, 8.
  6.  
  7. Turn the crankshaft one-half revolution clockwise. Adjust the following valves: Intake No. 1, 8, Exhaust No. 3, 6.
  8.  
  9. Turn the crankshaft one-half revolution clockwise to No. 6 firing position. Adjust the following valves in the No. 6 firing position: Intake No. 3, 4, Exhaust No. 5, 7.
  10.  
  11. Turn the crankshaft one-half revolution clockwise. Adjust the following valves: Intake No. 5, 6, Exhaust No. 1, 2.
  12.  
  13. Run the engine until the normal operating temperature is reached. Reset all clearances, using the procedure listed above under "Engine Running."
  14.  

 
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