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Valve Spring Installed Height

Measured from spring seat (or top of shim) to top of valve spring shield. If specifications exceeded (see  Valve Springs  " table above)  , install a 1 "16" spacer under spring to bring within limits.

CAUTION: Do not shim spring to give installed height less than specifications.
VALVE LIFT SPECIFICATIONS

Year Engine Valve Lift
1968 396" Int. .3983"
      Exh. 3983"
    (350 HP) Int. .4614"
      Exh. .4800"
  427" Int. .4614"
      Exh. .4800"
    (435 HP) Int. .5197"
      Exh. .5197"
1969  396" Int. .3983"
      Exh. .3983"
    (350, 375 HP) Int. .4614"
      Exh. .4800"
  427" Int. .3983"
      Exh. .3983"
    (390, 400 HP) Int. .4614"
      Exh. .4800"
    (425, 430, 435 HP) Int. .5197"
      Exh. .5197"
1970  396" (402") Int. .4614"
      Exh. .4800"
  400" (402") Int. .3983"
      Exh. .3983"
  454" Int. .3983"
      Exh. .4300"
    (360, 390 HP) Int. .4614"
      Exh. .4800"
    (460 HP) Int. .5197"
      Exh. .5498"
1971  402" Int. .3983"
      Exh. .4300"
  454" Int. .4614"
      Exh. .4800"
    (425 HP) Int. .5197"
      Exh. .5197"
1972  402" Int. .3983"
      Exh .4300"
  454" Int. .4614"
      Exh. .4800"
1973        (1)
(1) Information not available at time of publication.