GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1996 🢒 Corvette 🢒 Engine 🢒 Engine Mechanical - 4.3L and 5.7L 🢒 Exhaust Manifold Installation

Exhaust Manifold Installation Right Side


    Object Number: 11478 Size: SH
  1. Install the exhaust manifold gasket and exhaust manifold.
  2. Install the exhaust manifold studs and bolts.

    3. Tighten
    Tighten the exhaust manifold studs and bolts to 40 N·m (30 lb ft).

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.


    Object Number: 22755 Size: SH
  3. Install the air injection pipe, the check valve and bolts as an assembly.

    4. Tighten

        • Tighten the secondary air injection pipe fitting to 55 N·m (41 lb ft).
        • Tighten the secondary air injection pipe bolt to 40 N·m (30 lb ft).

Exhaust Manifold Installation Left Side


    Object Number: 11490 Size: SH
  1. Install the exhaust manifold gasket and exhaust manifold.
  2. Install the exhaust manifold studs and bolts.

    3. Tighten
    Tighten the exhaust manifold studs and bolts to 40 N·m (30 lb ft).

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.


    Object Number: 26556 Size: SH
  3. Install the secondary air injection pipe, the check valve, and the hose.

    4. Tighten

        • Tighten the secondary air injection pipe fitting to 55 N·m (41 lb ft).
        • Tighten the secondary air injection pipe bolt to 40 N·m (30 lb ft).