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Home >> Chevrolet >> 1990 >> Step Van 7.4 N, Standard >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> Engine Removal - Pickup & Van >> Removal & Installation >> 5.0L & 5.7L V8 Engines >> Removal & Installation ("G" Series)

Removal & Installation ("G" Series)

  1. Place transmission gear selector in Park (Neutral on manual transmissions). Set parking brake and block drive wheels. Although fuel pressure drops to zero when ignition is turned off, loosen fuel filler cap to relieve tank pressure. To further minimize risk of fire and personal injury, cover surrounding areas with a shop rag while removing fuel lines.
    WARNING: To avoid possible personal injury and fire danger, fuel pressure must be relieved as outlined in step 1).
  2. Disconnect battery cables and drain cooling system. Remove engine cover, air cleaner and air stove pipe. Remove coolant reservoir, grille, upper radiator support and lower grille valance. Disconnect automatic transmission cooler lines (if equipped) and radiator hoses.
  3. On A/C equipped models, discharge system and remove condenser. Remove radiator brackets, radiator and shroud. Remove power steering pump and set aside (if equipped).
  4. Disconnect wiring from firewall connection. Disconnect vacuum lines and wiring as necessary. Disconnect accelerator cable and remove TBI unit. Remove thermostat housing, oil filler tube and disconnect heater hoses. Remove cruise control servo, transducer, and bracket (if equipped).
  5. Raise vehicle. Disconnect exhaust pipe at manifold. Remove drive shaft and plug extension housing. Disconnect shift linkage and speedometer cable. Disconnect fuel and vapor hoses from engine. Remove transmission mount bolts and engine mount bracket-to-frame bolts.
  6. Drain crankcase. Raise engine slightly and remove engine mounts. Block engine up with wooden blocks. Lower vehicle and attach lift equipment. Remove engine and transmission as an assembly.
    NOTE: When raising or supporting engine, DO NOT use jack under oil pan, crankshaft pulley or any sheet metal. Oil pan can bend against oil pump pickup and damage unit.
  7. To install, reverse removal procedure. Tighten nuts and bolts to specification. See TORQUE SPECIFICATIONS table in this article.