Thanks for the responses...hopefully the tube will be laying in the pan. Why else would I have no low oil pressure if everything else looks fair.

Unreal04... yep it's got oil. you gotta have low pressure oil before you can have high pressure oil. yes there are oil leaks... it's a 6.0. My idiot gauge always came up on crank... thats why this has got me so baffled... from running trouble free to zilch in 15 seconds