Cylinder Head Installation Figure 12-86 Tool Reqired: J 36660 Torque Angle Meter Clean • Gasket surfaces on the block and cylinder head Install or Connect 1 . Head Gasket IMPORTANT: Do not use sealer on head gaskets. Place the gasket over the block dowel pins with the head up. 2 . Cylinder head. Carefully guide the cylinder head into place over the dowel pins and gasket. Notice : Refer to “Notice” on page 1. 3 . Cylinder head bolts. Coat threads of the cylinder head bolts with sealing compound (GM P/N 12346004) or equivalent and install fingertight. Tighten A . Bolts to 30 N·m (22 lb.ft.). B . Bolts in sequence using J 36660 to:
- Short length bolt (11, 7, 3, 2, 6, 10) 55 ° - Medium length bolt (12, 13) 65 ° - Long length bolt (1, 4, 8, 5, 9) 75 ° 4 . Spark plugs. Tighten • Spark plug - new cylinder head to 30 N·m (22 lb· ft.). • All other subsequent installations to 20 N·m (15 lb· ft.). Valve Train Component Installation Figure 12-87 and 12-88 IMPORTANT: Replace all valve roller lifters, change the engine oil and filter, and add GM Engine Oil Supplement GM P/N 1052367 (or equivalent) to the engine oil whenever a new camshaft is installed.
Lubricate the valve lifters bodies and roller with GM Engine Oil Supplement GM P/N 1052367 (or equivalent) Figure 12-86 Cylinder Head Bolt Tightening Sequence Figure 12-87 Valve Train Components Figure 12-88 Valve Rocker Arms and Components G643 (E) Service Manual Chapter 3. Engine Mechanical System 104