I would suggest for fastest results either grab a Haynes manual, which will give you all torque specs, or call the local Chevy dealer, and ask them for torque specs. When we worked at Dodge we got a Pontiac Sunfire in with a blown head gasket. We called the dealership and there were two different torque specs, one for "long" head bolts, and one for "short" head bolts. We would not have known this otherwise. You'll also want to have a diagram to show the order in which to tighten the head bolts.
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