Torque Specifications
Cylinder Head Bolt Tightening Sequence:
Coat threads of the cylinder head bolts with sealing compound (GM p/n #1052080 or equivalent) and install finger-tight.
Tighten cylinder head bolts, in three steps, using the sequence shown in image.
Step 1. 30 n.m (22 ft. lbs.)
Step 2. 60 n.m (44 ft. lbs.)
Step 3. 92 n.m (68 ft. lbs.)