What are the torque specification for Toyota 4A-GE 20 valves Silvertop Cylinder head bolts?

Step 1: 39 ft-lb (53 Nm)

Step 2: Additional 90 degree (1/4 turn) rotation

Step 3: Additional 90 degree (1/4 turn) rotation

It is important to follow these torque specifications exactly to ensure proper sealing of the cylinder head and to prevent any damage to the engine.