Installation

^ Tool Required:
- J 441040 Camshaft Sprocket Spanner Wrench

1. Apply clean engine oil to all rocker arm components to ensure ease of assembly.
2. Rocker arm shaft by pushing the rocker arm shaft through the front of the cylinder head. Slide the exhaust rocker arms and rocker arm springs as the rocker arm shaft is being installed.
3. Push rocker arm shaft back through the rear of the cylinder head until the end of the rocker arm shaft appears.





4. New O-ring onto rear of rocker arm shaft.





NOTE: Rotate the rocker arm shaft so that the flat machined surface is horizontal and facing down parallel with the cylinder head mating surface.





5. Six rocker arm shaft bolts into cylinder head.
^ Tighten the Rocker arm shaft bolts to 10 Nm (89 inch lbs.).
6. Fill rocker arm shaft bolt holes with clean engine oil.
7. All intake rocker arms with clips onto rocker arm shaft.

NOTE: The camshaft carrier caps are embossed with numbers and arrows to ensure correct assembly. The number one 1 camshaft carrier cap must be installed at the front of the cylinder head with the remaining carrier caps following in numerical order. The directional arrows must always point toward the front of the cylinder head.

8. Apply a liberal amount of clean engine oil to camshaft.
9. Apply GM P/N 12346240 or equivalent to the bottom of the number six camshaft carrier cap.
10. Camshaft and camshaft carrier caps onto cylinder head; secure with twelve bolts.





CAUTION: Always tighten the camshaft carrier cap bolts gradually in the order shown. If the camshaft carrier cap bolts are tightened at random, damage to the camshaft may occur.

^ Tighten the camshaft carrier cap bolts to 10 Nm (89 inch lbs.).
11. Apply engine oil to the new camshaft seal lip.
12. New camshaft seal into cylinder head until camshaft seal is flush with camshaft carrier surface.





13. Timing belt inside cover to cylinder head; secure with two bolts.
^ Tighten the timing belt inside cover bolts to 10 Nm (89 inch lbs.).
14. Rocker arm shaft plug into cylinder head.
^ Tighten rocker arm shaft plug to 33 Nm (24 ft. lbs.).





NOTE: During camshaft timing belt gear installation, align the camshaft dwell pin with the slot in the camshaft timing belt gear designated as E.





15. Camshaft timing belt gear onto camshaft using a camshaft spanner wrench to hold the camshaft timing belt gear stationary; secure with one bolt.
^ Tighten the camshaft timing belt gear bolt to 60 Nm (44 ft. lbs.).
16. Timing belt to engine.





17. Apply GM P/N 12346240 or equivalent to the surface of the distributor case that mates with the rear of the rocker arm shaft.
18. Distributor case to cylinder head; secure with three bolts.
^ Tighten the distributor case bolts to 10 Nm (89 inch lbs.).
19. Distributor into distributor case.
^ Adjust the valve lash.
20. Cylinder head cover onto cylinder head.
21. Radiator into radiator core support.





22. Front end panel to vehicle; secure with twelve bolts.
^ Tighten the header panel bolts to 10 Nm (89 inch lbs.).
23. Two electrical connectors to horn.
24. Hood latch to front end panel; secure with two bolts.
^ Tighten the hood latch bolts to 10 Nm (89 inch lbs.).
25. Front grille to vehicle.
26. Negative (-) battery cable.