Real loud tapping noise

[1badgs]

Hey guys, I just finished building my 7 bolt. The bottom end and head were done and put together by a shop here in town. I put the motor together and I forgot to bleed the lifters. It started up right away after a few cranks. and heard a real loud tapping noise coming from the engine, I figured I have bent valves, I did a compression test 4=0, 3=130, 2=127, 1=130. Now I haven't had any time to pull the head off but I just wanted opinions whether you guys think its bent valves or a rod knock since it sounds similar. The motor has all brand new forged internals and new springs, valves, and seals, this video was the first time the motor ever started. Was it possible to break anything on the bottom end? I have attached a link to the video of the noise, thanks guys


[ame=http://www.youtube.com/watch?v=pR-l85oahSo]Loud tapping - YouTube[/ame]

 

[Jimc]

What is the timing trigger plate?

 

[Archer Fabrications]

Something only 2gs 7 bolts have to worry about