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Chevrolet Master
2,993 Answers
- Posted on Mar 06, 2010
Re: Head gasket torque specifications and sequense
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Left side front cylinder head
Cylinder head bolt torque sequence—3.4L engine
Cylinder head by aligning it with the dowel pins
New cylinder head bolts coated with a sealant (such as GM 1052080). Torque the bolts in the proper sequence (1-8) to 37 ft. lbs. (50 Nm). Using a torque angle meter turn the bolts 90 degrees in the proper sequence.
Left side exhaust manifold. Torque the bolts to 12 ft. lbs. (16 Nm).
Spark plugs. Torque the plugs 11 ft. lbs. (15 Nm).
Right side rear cylinder head:
Cylinder head bolt torque sequence—3.4L engine
New cylinder head gasket
Cylinder head on top of the gasket and make certain it is lined up properly with the dowel pins
New cylinder head bolts coated with a sealant (such as GM 1052080). Torque the bolts in the proper sequence (1-8) to 37 ft. lbs. (50 Nm). Using a torque angle meter turn the bolts 90 degrees in the proper sequence.
Right side exhaust manifold. Torque the bolts to 12 ft. lbs. (16 Nm).
Spark plugs. Torque the plugs 11 ft. lbs. (15 Nm).
Spark plug wires
Exhaust crossover pipe. Torque the fastener to 18 ft. lbs. (25 Nm).
Valve rocker arms and pushrods. Torque the fastener to 89 inch lbs. (10 Nm). Using a torque angle meter torque the fastener an additional 30 degrees.
Lower intake manifold. Torque the bolts to 115 inch lbs. (13 Nm).
Upper intake manifold. Torque the bolts to 18 ft. lbs. (25 Nm).
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