GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Corvette 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L 🢒 Exhaust Manifold Installation - Left Side

Exhaust Manifold Installation - Left Side 6.2L LS3

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1408850 Size: SH

    Note: 

       • Tighten the exhaust manifold bolts as specified in the service procedure. Improperly installed and/or leaking exhaust manifold gaskets may affect vehicle emissions and/or on-board diagnostic (OBD) II system performance.
       • The cylinder head exhaust manifold bolt hole threads must be clean and free of debris or threadlocking material.
       • Do not apply sealant to the first 3 threads of the bolt.

  1. Install the heat shield (603) and bolts (604) and tighten to 9 N·m (80 lb in).
  2. Install the exhaust pipe studs (605) and tighten to 20 N·m (15 lb ft).

    3. Object Number: 1408849 Size: SH
  3. Apply a 5 mm (0.2 in) wide band of threadlock GM P/N 12345493 (Canadian P/N 10953488), or equivalent, to the threads of the exhaust manifold bolts. Refer to Adhesives, Fluids, Lubricants, and Sealers.
  4. Install the exhaust manifold, NEW gasket, and bolts.
    5. 4.1. Tighten the exhaust manifold bolts a first pass to 15 N·m (11 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, and work toward the outside bolts.
    4.2. Tighten the exhaust manifold bolts a final pass to 20 N·m (15 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, and work toward the outside bolts.
  5. Using a flat punch, bend over the exposed edge of the exhaust manifold gasket at the rear of the left cylinder head.

Exhaust Manifold Installation - Left Side 6.2L LS9

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 2054079 Size: SH

    Note: 

       • Tighten the exhaust manifold bolt as specified in the service procedure. Improperly installed and/or leaking exhaust manifold gaskets may affect vehicle emissions and/or on-board diagnostic (OBD) II system performance.
       • The cylinder head exhaust manifold bolt hole threads must be clean and free of debris or threadlocking material.
       • Do not apply sealant to the first 3 threads of the bolts.

  1. Apply a 5 mm (0.2 in) wide band of threadlock GM P/N 12345493 (Canadian P/N 10953488), or equivalent, to the threads of the exhaust manifold bolts. Refer to Adhesives, Fluids, Lubricants, and Sealers.
  2. Install the exhaust manifold (2), NEW gasket (3), and bolts (1) and:
    3. 2.1. Tighten the exhaust manifold bolts a first pass to 15 N·m (11 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, working toward the outside bolts.
    2.2. Tighten the exhaust manifold bolts a final pass to 20 N·m (15 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, working toward the outside bolts.
  3. Using a flat punch, bend over the exposed edge of the exhaust manifold gasket at the rear of the left cylinder head.

Exhaust Manifold Installation - Left Side 7.0L

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1552472 Size: SH

    Note: 

       • Tighten the exhaust manifold bolt as specified in the service procedure. Improperly installed and/or leaking exhaust manifold gaskets may affect vehicle emissions and/or on-board diagnostic (OBD) II system performance.
       • The cylinder head exhaust manifold bolt hole threads must be clean and free of debris or threadlocking material.
       • Do not apply sealant to the first 3 threads of the bolts.

  1. Install the heat shield (603) and bolts (604) and tighten to 9 N·m (80 lb in).
  2. Install the studs (605) and tighten to 20 N·m (15 lb ft).

    3. Object Number: 1552529 Size: SH
  3. Apply a 5 mm (0.2 in) wide band of threadlock GM P/N 12345493 (Canadian P/N 10953488), or equivalent, to the threads of the exhaust manifold bolts. Refer to Adhesives, Fluids, Lubricants, and Sealers.
  4. Install the exhaust manifold (600), NEW gasket (601), and bolts (602).
    5. 4.1. Tighten the exhaust manifold bolts a first pass to 15 N·m (11 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, working toward the outside bolts.
    4.2. Tighten the exhaust manifold bolts a final pass to 20 N·m (15 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, working toward the outside bolts.
  5. Using a flat punch, bend over the exposed edge of the exhaust manifold gasket at the rear of the left cylinder head.