ok my lb9 was knocking so i pulled it out and took the oil pan off and metal evrywhere!!!! but i saw that the balancer center bolt was tight but the washer was not tight against the pulley!!!! i tryed to tightin it but thats as much as it goes... so could that have made the disaster that is in my oil pan and how do i fix the balancer center bolt so this dont happen again??

and the balancer is not loose

Im confused. Was the metal inside of the pan or outside of it? Better yet, was metal in the oil itself? Have you checked your bearings? A balancer "floating" on the crank could possibly have been the cause, but I have yet to run across that problem. Sounds to me as if your oil pressure was low, metal met metal, temps went sky high, then knocks came a knocking. Anytime there is metal in your pan, your best bet is a complete teardown and rebuild. You dont want any of that metal floating around in your engine. It will tear up more things than you can imagine. Once you completely tear the engine down you should be able to see where that metal came from. Hope this helps.

yea metal inside the oil pan and the oil........ rebuid here i come

while its definitely not a good thing, i don't think it would have caused the metal you found in your pan. You're definitely going to be in for a rebuild though.