Old FH race cranks ( before the 8BA )

[Bored&Stroked]

I would definitely have that block sonic tested again . . . as I find it hard to believe that it has that much wall thickness left. I have sonic tested a lot of these blocks and have never found one to have that amount of thickness after a .125 overbore. With that said, it is possible - but I have not seen it.

When you have it sonic tested have them do each cylinder in 12 places - top, bottom and middle of the cylinder - on four 90 degree locations at each level.

I would love to see the numbers!