Pulling my hair out!!!

Hi there, there is no reason this engine should not run if it was set up properly. it sounds to me and i am no expert that your cam was not properly centerlined or degreed. this might explain the timing mark problem .if that is not the case than you might want to check , and don't get mad at me but make sure TDC is on the compession stroke and not the exhaust. its quite possible you are out 180 degrees. i don't know if an engine would even run if thats the case but it sounds to me like you would try anything right now. good luck Paul