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Home >> Chevrolet >> 1990 >> Step Van 7.4 N, Standard >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 7.4L V8 - VIN [N] >> Removal & Installation >> Cylinder Head >> Installation

Cylinder Head: Installation

  1. Clean all gasket surfaces and head bolt holes. On steel head gaskets, apply thin coat of sealer to both sides of gasket. DO NOT use sealer on steel/asbestos gaskets.
  2. Position gaskets on cylinder block with bead facing upward. Ensure all holes align. Install cylinder heads. Coat threads of head bolts with Sealant (1052080).
  3. Install and tighten head bolts in sequence. See Fig 1 . Tighten head bolts to specification. See appropriate TORQUE SPECIFICATIONS table. To complete installation, reverse removal procedure. Lubricate valve tip, rocker arm pivot and push rod socket with Molykote before installation. Adjust valves. See VALVE CLEARANCE ADJUSTMENT.
Fig 1: Cylinder Head Bolt Tightening Sequence
G50A00513Courtesy of GENERAL MOTORS CORP.
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