Intake Manifold Installation L98, LS2
Important: DO NOT reuse the intake manifold gaskets.
Install NEW intake manifold gaskets.
Important: The intake manifold, throttle body, fuel
injection rail and fuel injectors may be installed as an assembly. If not servicing
the individual components, install the intake manifold as a complete assembly.
- Install NEW intake manifold to cylinder head gaskets (1).
- Remove the lint free cloth from the engine (2).
- Install the intake manifold (1) to the engine (2).
- Apply a 5 mm bead of thread sealant such as LOCTITE
242™ or equivalent to the cleaned threads of the intake manifold to cylinder
head retaining bolts (2).
- Install the intake manifold to cylinder head retaining bolts (2).
Notice: Refer to Fastener Notice in the Preface section.
- Tighten the intake manifold to cylinder head retaining bolts (2).
Tighten
• | First Pass: Tighten in sequence to 5 N·m (44 lb in). |
• | Final Pass: Tighten in sequence to 10 N·m (89 lb in). |
Intake Manifold Installation LS3
Important:
• | The intake manifold, throttle body, fuel injection rail, and fuel injectors
may be removed as an assembly. If not servicing the individual components, install
the intake manifold as a complete assembly. |
• | DO NOT use the intake manifold gaskets again. Install NEW intake manifold-to-cylinder
head gaskets. |
- Install NEW intake manifold-to-cylinder head gaskets (514).
- Install the intake manifold (500).
- Apply a 5 mm (0.20 in) band of threadlock Loctite 242™
to the threads of the intake manifold bolts (512). Refer to
Adhesives, Fluids, Lubricants, and Sealers.
- Install the intake manifold bolts (512) and fuel rail stop brackets (712).
Notice: Refer to Fastener Notice in the Preface section.
- Tighten the intake manifold bolts.
Tighten
- Tighten the intake manifold bolts (1-10) a first pass in
sequence to 5 N·m (44 lb in).
- Tighten the intake manifold bolts (1-10) a final pass in
sequence to 10 N·m (89 lb in).
- Lubricate the manifold absolute pressure (MAP)
sensor grommet (715) with clean engine oil.
- Install the MAP sensor (714) and grommet (715).
- Install the MAP sensor bolt (713).
- Install the positive crankcase ventilation (PCV) -
dirty air hose (716).
- Install the PCV - fresh air hose.
- Install the evaporative emission (EVAP) canister purge solenoid valve (730),
bracket (741), and bolt (742).
Tighten
Tighten the bolt to 50 N·m (37 lb ft).
- Install the EVAP tubes (729 and 735).
- Install the fuel rail. Refer to
Fuel Rail and Injectors Installation.