I have seen these in a number of different Ford blocks (SB & FE) and wonder if these are not some sort of sacrificial anode of sorts, or something used to line up the sand castings with.......
They are not used for aligning anything else.....
Steve
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.