What is the cylinder head head bolt tension on a grey motor Holden?

The cylinder head bolt tension for a Grey Motor Holden, typically found in models like the 48-215 (FX) through to the EK, is usually set to around 60-65 ft-lbs (or approximately 81-88 Nm). It's important to follow a specific tightening sequence and procedure to ensure even pressure across the cylinder head. Always refer to the manufacturer’s specifications or a service manual for precise details, as variations may exist based on engine modifications or specific model years.