Fresh engine, wiped cam? Tick? (new pics added)

also if you had bad cam bearings....your oil pressure would most likely be lacking.....and another thing...I know you said it sounded like #8 cylinder but are you sure you dont have a bad timing chain or something?

a good way to pin point the where abouts of a tick/knock is to put a long handled screw driver to your ear (the HANDLE END) LOL and put the other end on various spots of the engine and listen to where it sounds the loudest and most prominent.