This should help you.
Fan Clutch Replacement (5.7L and 6.5L)
Caution: Do not use or attempt to repair a damaged cooling fan assembly. Replace damaged fans with new assemblies. An unbalanced cooling fan could fly apart causing personal injury and property damage.
Use the Spanner in order to hold the Pulley.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Tighten Tighten the bolts to 23 N·m (17 lb ft).
Use the Spanner to hold the pulley.
Use the Spanner in order to hold the pulley.
Ok,here is the info for that engine.
Fan Clutch Replacement
Tighten Tighten the nut clockwise to 56 N·m (41 lb ft).