Thanks for the information. I like the 416 stroker idea, but I am concerned about boring my cylinder walls too thin. How far out could I safely take the block? Also, will this block accept cams designed for other FE engines?

Here are all the numbers that I could find on the passenger side of the block near the front. They are upside down so I had to crane my neck to see them. Some may not be correct.

B9AE6015E

CE22:4

44

15

DIF