What Are the Torque Specs for Chevy 350 Head Bolts?

If securing the stock cast iron head, the torque specifications for Chevrolet 350 cubic inch V8 head bolts are 65 foot-pounds per bolt. The torque settings for aftermarket aluminium cylinder heads are unique, thus the manufacturer’s instructions should be consulted.

Chevy 350 cylinder head bolts must always be tightened in a helical pattern, beginning with the central bolt and working outwards in a clockwise spiral. To ensure uniform pressure across the head, it is recommended to initially tighten all the bolts to 25 foot-pounds, then 45 foot-pounds, and lastly 65 foot-pounds. In addition, engine oil or another lubricant should be applied to blind-hole bolts, and sealant should be applied to bolts that pierce the water jacket.

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