Cylinder Head Torque & Sequence

Install the cylinder head to the engine block. Guide the cylinder head carefully into place over the dowel pins and the cylinder head gasket.





Apply sealant GM P/N 12346004 or equivalent to the threads of the cylinder head bolts.

Notice: Refer to Fastener Notice in Service Precautions.

Install the cylinder head bolts.
^ Tighten the bolts in sequence on the first pass to 30 Nm (22 ft. lbs.).





Use the J36660-A in order to tighten the cylinder head bolts in sequence on the final pass. Tighten
^ Tighten the long bolts (1, 2, 5, 6, 9, 10, and 13) on the final pass in sequence to 75°.
^ Tighten the medium bolts (14 and 17) on the final pass in sequence to 65°.
^ Tighten the short bolts (3, 4, 7, 8, 11, 12, 15, and 16) on the final pass in sequence to 55°.