just rebuilt my motor and i am not getting oil to the heads it is filling up the oil filter and seems to lubbing the crank i dropped the tranny and pan it was dripping from the mains but i am not getting any oil in the rocker valley any clue?

i checked out the restrictor plug in the back of the block it's fine the plug in the back of the crank is fine it has a double roller timing chain and ls6 oil pump the spacers i made sure where done right i packed the oil pump with assmb. lube anyone?