12. When installing head bolts, make sure the washers are oriented in the correct position. The chamfered edge should be towards the bolt head. They go this way so a stress point isn't created under the bolt head when it's torqued down. The head bolts are tightened down in three steps to 70 ft-lbs, 23-46-70. The order to torque the bolts in is available online, or in any service manual for a car that had a big-block. All Mark IV big-blocks use the same sequence.