Are valve pins hardened or soft metal?
Lorenzo, the pins should be hardened, seems some sold today are better than others. I used these...hope this helps.
There is some threads from 2015 about soft valve pins. I had to replace mine and found out the hard way because they didn't last very long. I used the suggestion of making my own from hardened drill bit stock and the are still doing fine.
According to Ford, the size of the pins should be 7/64" x 17/32”.