FWB I will call and ask. This is a private company that sell to companies like Comp cams. It is magic, the powder is poured into a mold and a 100 tons od pressure applied to make the gear. There is a 2-3% fudge factor they have to work with. I will try and call monday, if it's ok I will e-mail you monday night with his answer. Rick L. He will explain just how the MAGIC works.
