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Valve Springs

  1. Inspect valve spring pressure and free length. If valves and/or seats have been ground, measure valve height. See Figure. If valve height is greater than 1.8737" (47.592 mm) on intake or 1.9347" (49.141 mm) on exhaust, grind valve tip until valve height is within specification. See VALVES & VALVE SPRINGS  table under ENGINE SPECIFICATIONS.
  2. If valves and/or seats have been ground, measure valve spring installed height from top of spring seat to bottom of spring retainer. See Figure. If spacers are installed, measure from top of spacer. If height exceeds 1.5256" (38.75 mm), install a 0.030" (.762 mm) thick spacer in cylinder head counterbore to obtain correct installed height. See VALVES & VALVE SPRINGS  table under ENGINE SPECIFICATIONS.
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