Don't believe all the old world internet claims of the CC of all these heads, they are not exactly 72 cc My 1968 #16 heads are actually 77 CC
Since I am down to using the 62 heads I thought I'd cc them just to see what I am working with. All of them came in around 71 cc. Granted I wasn't using super expensive or super accurate equipment (plexiglass with 2 holes in it, a smear of vasoline, and a syringe)I was just curious given what Bigchief said.