Ok LA Fans Explain this one to me......

I wish I could answer some of your questions in post #4. I cant remember, as I tore this block apart 10 plus years ago. It was soaked with oil and shrink wrapped all these years until about a month ago. The project is now back in the garage.
And the questions you are asking we can't answer, just speculate. You are going to need help from a machine shop.