Anzugsdrehmomente

Cylinder Head Bolts

• 1: 44 lb ft
• 2: 95 deg

Cylinder Head Bolts Coat threads with sealer
Tighten all bolts to 33 ft. lbs.
Tighten all an additional 90 degrees (1/4 turn)

Main Bearing Bolts 

• 37 ft. lbs.
• plus 77 degrees

Rod Bearing Bolts

• 1: 15 lb ft
• 2: 75 deg

Crankshaft Damper Bolts

• 1: 52 lb ft
• 2: 72 deg

Crankshaft Damper Bolts 76

Flywheel Bolts 52 lb ft
Flywheel Bolts 61

Manifold Intake Upper: 18 lb ft

Lower Center:
1: 62 lb in
2: 115 lb in
Lower Corner:
1: 115 lb in
2: 18 lb ft
Manifold Intake Lower manifold: 10 ft. lbs.
Upper manifold: 18 ft. lbs.

Manifold Exhaust Nut: 12 lb ft
Stud: 13 lb ft
Manifold Exhaust 12

Spark Plugs 13 lb ft
Spark Plugs 11

Wheel Lug Nuts 100
Wheel Lug Nuts 100 lb ft

New Intake Gasket for 3.1L LG8 and 3.4L LA1 Engines
A new design intake gasket, P/N 89017279, has been released for service on the 3.1 and 3.4 engines and is currently available from GMSPO.

The new torque specification is a 2-step process; tighten the vertical lower intake manifold bolts (the four middle ones) to 7 Nm (62 lb in). Tighten the diagonal lower intake manifold bolts (two on each end) to 7 Nm (62 lb in). Tighten the vertical lower intake manifold bolts (the four middle ones) to 13 Nm (115 lb in). Tighten the diagonal lower intake manifold bolts (two on each end) to 25 Nm (18 lb ft).