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Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 90 (3.8L V6 Gas - VIN [L]) >> Overhaul >> Cylinder Head Overhaul >> Valve Springs

Valve Springs

WARNING: This page is about a different car, the 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, and 1995 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check valve spring free length and pressure. Replace valve spring if not within specification. See VALVES & VALVE SPRINGS SPECIFICATIONS  table under ENGINE SPECIFICATIONS.
  2. Measure valve spring installed height from top of spring seat to bottom of spring retainer. If valve spring installed height exceeds 1.681" (42.70 mm), install a .031" (.79 mm) thick spacer in cylinder head counterbore to obtain correct installed height. See VALVES & VALVE SPRINGS SPECIFICATIONS  table under ENGINE SPECIFICATIONS.
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