Installation

Rocker Arms:

Figure 2 Cylinder Head:

INSTALLATION
1. Place the gasket in position over the dowel pins, with the note "This Side Up" showing.
2. Install cylinder head.
3. Coat cylinder head bolt threads with sealer GM P/N 52080 (or equivalent), install bolts, and torque bolts to 45 Nm (33 lb. ft.) + 90°, using J 36660. See Figure 2 for tightening sequence.
4. Install intake gasket.
5. Install pushrods loosely retained with rocker arms.

NOTE Install correct length pushrods: intake pushrods are marked orange and are 6 inches long; exhaust pushrods are marked blue and are 6 3/8 inches long.

6. Install rocker arm nuts and torque to 26 Nm ( 19 ft. lb. ).
7. Install intake manifold and plenum. Refer to Intake Manifold / Service and Repair. Service and Repair
8. Install valve covers.
9. Install oil level indicator.
10. Connect plug wires to cylinder head.
11. Install left exhaust manifold and torque bolts to 28 Nm ( 21 ft. lb. ) Refer to Exhaust Manifold / Service and Repair. Service and Repair
12. Install exhaust crossover pipe and torque nuts to 25 Nm ( 18 ft. lb. )
13. Install engine strut bracket and torque bolts to 47 Nm ( 34 ft. lb. )Torque strut to upper tie bar to 22 Nm ( 16 ft. lb. )
14. Fill cooling system. For additional procedures refer to Cooling System / Service and Repair / Draining and Refilling. Service and Repair
15. Connect negative battery cable and torque bolt to 15 Nm ( 11 ft.lb. ).Refer to Fuel Delivery and Air Induction / Service and Repair / Idle Learn Procedure.
16. Install air cleaner assembly.
17. Inspect for proper fluid levels, leaks, and completion of repair.

NOTE It is recommended that engine oil be drained and crankcase refilled with clean engine oil to avoid possible contamination by engine coolant and/or foreign material when removing cylinder head.