ok im getting a loud clicking ( like a card placed in a spoke of a bicycle and riddin) it isent from any belt driven asscorys ( i took the belt off and its still there) it seems to be coming from the driver side head or valve cover area.

know i have built hundreds of 351 clevlands a few 351 windsors and a few 302's, but i have never done anything other than a oil change on a 4.6 i have no clue what it looks like under the valve cover! i know its a cam roker lifter set up, im thinking maybe some lodes are wiped out or somthing but im a little reserved to take it appart, any advice list of parts or pics would be great! can anyone help?
thanks AL