Cylinder Head Installation - Chevrolet 1991 Light Duty Truck Repair Manual

6A5-32 V8 ENGINES
Tighten
• Bolt to 90 N-m (65 ft. lbs.).
OIL RAN INSTALLATION
5.0L AND 5.7L ENGINES
|-»<-| Install or Connect (Figures 68 and 69)
• Apply PST sealer (GM part no. 1052080 or equiva­
lent) to the front cover to block joint and rear
crankshaft seal retainer to block joint.
1. Oil pan gasket to the oil pan.
2. Oil pan to the engine.
3. Oil pan bolts, nuts, and reinforcements.
— Oil pan bplts to 11 N-m (100 in. lbs.).
— Oil pan Sjts to 22 N-m (200 in. lbs.).
45. Bolt
46. Cylinder Head
47. Gasket
Figure 71—Cylinder Head (7.4L Engines)
7.4L ENGINES
0
Install or Connect (Figure 70)
• Apply PST sealer (GM part no. 1052080 or equiva­
lent) in four places where the front and rear main
bearing caps meet the engine block as shown in
figure 70.
1. Gasket (74) to the block.
2. Oil pan (76). Make sure the gasket stays in place.
3. Bolts (75).
Tighten
• Bolts to 18 N-m (160 in. lbs.).

CYLINDER HEAD INSTALLATION

3 Clean
— Gasket surfaces on block and cylinder head.
Install or Connect (Figures 71, 72, 73 and 74)
Head gasket.
1.
• On engines using a STEEL gasket, coat both
sides of the new gasket with an anaerobic seal­
er. Spread the sealer thin and even. Too much
sealer may hold the gasket away from the head
or block.
• Use no sealer on engines using a composition
gasket.
f»
47
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