[byron w]

Mike, Enjoyed the video !!! Excaliber just might be on to something with the intake manifold idea. Take a telescoping mirror and look behind there. You can get one at any parts store.
If you were running real hard you could have built up enough pressure to push out the rear gasket. Also, since I am thinking about using the same cam you are, I would love to hear it idle after you get it back togther. Keep us posted.
Byron W.