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Camshaft Lobe Lift Check

  1. Remove valve rocker cover, gaskets, rocker arms and balls.
  2. Attach Tool J-8520 to stud, then position clamp and indicator with ball socket adapter of Tool J-8520 to pushrod. NOTE - Pushrod must be in lifter socket.
  3. Rotate crankshaft slowly in direction of rotation until lifter is on heel of cam lobe. At this point, pushrod will be at lowest position.
  4. Set dial indicator to zero, then rotate crankshaft slowly or attach an auxiliary starter switch and bump engine over until pushrod is in fully raised position.
    NOTE: Ground primary wire on coil before cranking.
  5. Total lift on indicator should be as shown in table.
    Cam Lobe Lift

    Engine Lift
    153"  
      1965-67 .227"
      1968-69 .1712"
      1970 .227"
    194"  
      1965-67 .1896"
    230"  
      1965-70 .1896"
    250"  
      1966-72 (1).0.2217"
      1973 .2217"
    (1) 1972 California: Intake.2217". Exhaust.2315".
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