Well, got head on used all Felpro gaskets. Switched out water pump, timing chain and gears, thermostat, fuel pump, all new belts. Ran for a few minutes like a champ then started to hear a horrific noise. Sounded like a broke rod. Pulled oil pan and cant see any damage but flywheel can move an inch or so without crankshaft moving. Any ideas before I pull tranny to see if it is the problem. Starting to rack up the hours on this thing.

2001 Jeep Wrangler Sahara/4" Rough Country Lift/BFG 32x11.5x15
I caught this "JEEP thing" of your and now it hurts when I pee.