Figure my compression

LOL cheif. Long story but My machinist milled them just like I asked and did not check them prior to milling soooo I now have 49cc cast iron 360 heads. My guess is they were milled once before. I have been running them for almost a year now with no issues.

oh, almost forgot to thank you for taking the time to do the sanity check for me. I think I can live with the 12:1 better than 13:1