Power Solutions International — Intake Manifold Replacement - Installation
Repair & overhaul
From a Power Solutions International service manual — check it applies to your exact model before use.
Applies to: General Motors 8.8L engine
Before you start
- The intake manifold gaskets are not reusable
- DO NOT reuse intake manifold bolts; install NEW bolts
Procedure
- Install the splash shield and ensure it snap fits between the cylinder heads.
- Install the NEW intake manifold end seals and side gaskets.
- Ensure gasket tabs align with hole in head gasket and slot in end seals.
- Install the intake manifold.
- Apply engine oil to the bolts of the intake manifold.
- Install the NEW intake manifold bolts.
- Tighten in sequence using four passes: 40, 80, 120, 154 in-lbs.
- Install the fuel rail and studs; tighten studs to 12 Nm (106 lb in).
Specs & values
- Intake manifold bolts 40 → 80 → 120 → 154 in-lbs
- Fuel rail studs 12 Nm (106 lb in)
Source: Power Solutions International service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.