302 casting on a set of 318 heads

Mike...still have the ones that came out of my '67 273. What measurement would you like?
Thanks for the offer but I got a pair of original steel shims from one of the gents here and measured them. I wonder where that thread went. I hope I bookmarked it. My bookmark file is getting pretty crowded. Yep, 19 pages of bookmarks. LOL

52 Year Old Head Gaskets