Fastener Tightening Specifications
Cylinder Head Installation - Left Side and Right SideInstall the left cylinder head.
Install the NEW M12 cylinder head bolts.
Notice: This component uses bolts with a preapplied molybdenum disulfide coating for thread lubrication. Do not remove the coating or use any additional lubricant. Improperly lubricated threads will adversely affect the bolt torque and clamp load. Improper bolt torque and clamp load can lead to engine damage.
Tighten the M12 cylinder head bolts in three steps:
Cylinder Head M12 Bolt - Angular Tightening Method
1st Step 50 N.m (1st Step 37 lb ft)
2nd Step 80 N.m (2nd Step 59 lb ft)
3rd Step 60 degrees
4th Step 60 degrees
Cylinder Head M8 Bolt 25 N.m (18 lb ft)
Left Side:
Intake Manifold Replacement - Left Side (LLY, LBZ)
Tighten the intake manifold bolts/nuts in the sequence shown to 25 N.m (18 lb ft).
Right Side:
Intake Manifold Replacement - Right Side (LLY, LBZ)
Tighten the intake manifold bolts/nuts in the sequence shown to 25 N.m (18 lb ft).
Left Side:
Intake Manifold Replacement - Left Side (LMM)
Tighten the intake manifold bolts/nuts in the sequence shown to 25 N.m (18 lb ft).
Right Side:
Intake Manifold Replacement - Right Side (LMM)
Tighten the intake manifold bolts/nuts in the sequence shown to 25 N.m (18 lb ft).
Exhaust Manifold Replacement - Right Side (6.6L)
Torque the bolts/nuts (QTY.6) to the sequence shown 38 N.m (28 ft lb)
Exhaust Manifold Replacement - Left Side (6.6L)
Torque the bolts/nuts (QTY.6) to the sequence shown 38 N.m (28 ft lb)