Installation

Install or Connect

1. Head gasket.

NOTICE: See TSB #87-204 for important headgasket information.

- If a steel gasket is used, coat both sides of the gasket with sealer. Spread the sealer thinly and evenly.

- Do not use sealer on composition steel-asbestos gaskets.

- Place the gasket over the block dowel pins with the bead up.

2. Cylinder head. Carefully guide the cylinder head into place over the dowel pins and gasket.

CAUTION: When fasteners are removed, always reinstall them at the same location from which they were removed. If a fastener needs to be replaced, use the correct part number fastener for that application. If the correct part number fastener is not available, a fastener of equal size and strength (or stronger) may be used. The correct torque value must be used when installing fasteners that require it. If the above conditions are not met, parts or system damage could result.

3. Cylinder head bolts. Coat threads of the cylinder head bolts with sealing compound (GM p/n #1052080 or equivalent) and install finger-tight.

Cylinder Head Bolt Tightening Sequence:

4. 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.)

5. Pushrods.

6. Adjust valves. Refer to Valve, Intake/Exhaust. Adjustments

7. Spark plugs. Torque to: 20 n.m (15 lb. ft.)

8. Rocker arm cover. Torque to: 11n.m (95 in.lbs.)

Intake Manifold Torque Sequence:

9. Install intake manifold. Torque in sequence (see image) to: 48n.m (35 ft.lbs.)

10. Exhaust manifold. Torque to:
Cast manifolds:
Two center bolts 36n.m (26 ft. lbs.)
All others 28n.m (20 ft. lbs.)

Tubular (stainless steel) manifolds:
All bolts 36n.m (26 ft. lbs.)

11. Components as follows for right side cylinder head:

- AIR pump bolt and spacer at the cylinder head (if equipped).

- Air conditioning compressor to the cylinder head and bracket.

- Fuel pipe, plug wire and wiring harness brackets at the rear of the cylinder head.

12. Components as follows for left side cylinder head:

- Generator.

- Power steering pump.

- Nut and stud attaching main accessory bracket to the cylinder head.

- Remaining main accessory bracket bolts and nuts, if necessary.

- Coolant sensor wire.

- Cruise control transducer (if equipped) and spark plug wire brackets at the rear of the cylinder head.

13. Ground strap at the rear of the cylinder head (right side cylinder head).

14. Engine cover.

15. Battery negative cable.

- Fill the cooling system with the proper quantity of coolant. Refer to Cooling System, Capacities. Specifications

- Evacuate and charge the air conditioning system.