Chevy 6.0 Head Bolt Torque
Cylinder Head InstallationProceduresTorque ValuesTechnical information on theinstallation of cylinder heads for Harley-Davidson motorcycles. CylinderHead Bolt InstallationFactory MethodFor each cylinder head, start with head bolt numbered one. Inincreasing number sequence (1-2-3-4), tighten the head bolt in three stages.1. Tighten each bolt to 7-9 foot pounds of torque.2, Tighten each bolt to 12-14 foot pounds of torque.3. Mark each head bolt and head with aligning marks. Tighten eachbolt 1/4 turn (90 degrees).Cylinder Head Bolt InstallationTorque Wrench MethodFor each cylinder head, start with head bolt numbered one. Inincreasing number sequence (1-2-3-4), tighten the head bolt in four stages.1. Tighten each bolt to 7-9 foot pounds of torque.2.
The torque procedure for tightening a TTY head bolt involves tightening it until a certain torque reading is reached. Then the bolt is given an additional turn to a specified angle (say an additional 45 to 90 degrees) to load the bolt beyond its yield point for maximum clamping pressure. Head bolt torque refers to the amount of rotational force that must be applied to the cylinder head bolts for a safe and secure connection either to the engine block or another cylinder head depending upon the engine. After the desired torque is reached, some bolts then require further rotation of a few degrees.