Well as it turns out my timing slipped between the cams and crank on bank 1 where most of the noise was coming from. Hope I didn't bend anything up by running it (idled only.with few revs) to add insult to injury I accidentally pushed the cam end plug into the engine. Took the cam cover off(replacing tappets) but didn't find it yet.going to try and get a magnet in there. Any tips? What are the chances I did major damage to the engine. Probably off maybe 20 degrees as a guestamet. thanks v