Heavy Knock When Hot, With Torque Applied

Heavy knock hot with torque applied may be caused by one or more of the following conditions:
^ Broken balancer or pulley hub (replace parts as necessary)
^ Loose torque converter bolts (tighten to specifications)
^ Accessory belts too tight (adjust the tension to specifications)
^ Accessory belts nicked (replace as necessary)
^ Exhaust system grounded (reposition the exhaust as necessary)
^ Flywheel cracked (replace as necessary)
^ Excessive main bearing clearance (replace as necessary)
^ Excessive rod bearing clearance (replace as necessary)
^ Low quality fuel (upgrade as necessary)