Supercharger Installation

Special Tools 

EN 48898  Supercharger Lift Fixture

For equivalent regional tools, refer to Special Tools

NOTE:
• The supercharger, throttle body, fuel injection rail and fuel injectors may be removed as an assembly. If not servicing the individual components, remove the supercharger as an assembly.
• Cover the rotors area of the supercharger to prevent dirt or debris contamination onto the rotors.
Fig 1: Identifying Inlet Area Of Supercharger
Courtesy of GENERAL MOTORS COMPANY
1. Cover the inlet area of the supercharger (1) to prevent dirt or debris contamination onto the rotors.
Fig 2: View Of Supercharger Lift Fixture
Courtesy of GENERAL MOTORS COMPANY
2. Install the EN 48898  fixture to the supercharger.
3. Tighten the EN 48898  fixture bolts and nuts until snug.
4. Using the lifting device, install the supercharger onto the engine. Align the dowel pin at the right front of the supercharger to the cylinder head.
Fig 3: Identifying Supercharger Bolts
Courtesy of GENERAL MOTORS COMPANY
5. Apply a 5 mm (0.2 in) band of threadlocker GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the threads of the bolts.
6. Install the supercharger bolts (1).
Fig 4: Identifying Supercharger Bolt Tightening Sequence
Courtesy of GENERAL MOTORS COMPANY
7. Tighten the bolts.
8. Tighten the bolts a first pass in sequence to 5 N.m (44 lb in).
9. Tighten the bolts a final pass in sequence to 10 N.m (89 lb in).
Fig 5: Supercharger Cover, Bolts & Seal
Courtesy of GENERAL MOTORS COMPANY
10. Install a NEW supercharger cover seal (3).
11. Install the supercharger cover bolts (1) and the supercharger cover (2).
Fig 6: Supercharger Bolt Tightening Sequence
Courtesy of GENERAL MOTORS COMPANY
12. Tighten the bolts.
13. Tighten the bolts a first pass in sequence to 5 N.m (44 lb in).
14. Tighten the bolts a final pass in sequence to 10 N.m (89 lb in).
15. Install the fuel rail with injectors as required. Refer to Fuel Rail and Injectors Installation (LS7) Fuel Rail and Injectors Installation (LS3, L99, or LSA) .
Fig 7: Identifying Positive Crankcase Ventilation Dirty Air Hose
Courtesy of GENERAL MOTORS COMPANY
16. Install the positive crankcase ventilation (PCV) - dirty air hose (1) to the valley cover and supercharger.