Century V6-3.1L VIN J (2005)
7. Install the valve rocker arms and pushrods.
8. Install the lower intake manifold.
9. Apply sealant, GM P/N 12345382 (Canadian P/N 10953489) to the threads of the bolts.
Notice: An oil leak may result if the vertical bolts are not tightened before the diagonal bolts.
10. Install the lower intake manifold bolts (1, 2).
10.1.
Tighten the center lower intake manifold bolts (1) to 7 Nm (62 inch lbs.).
10.2.
Tighten the corner lower intake manifold bolts (2) to 7 Nm (62 inch lbs.).
10.3.
Tighten the center lower intake manifold bolts (1) to 13 Nm (115 inch lbs.).
10.4.
Tighten the corner lower intake manifold bolts (2) to 25 Nm (18 foot lbs.).
11. Install the thermostat bypass hose to the thermostat bypass pipe and lower intake manifold pipe.
