Speedmaster head cc ?
 

I know the heads are 72cc but I can’t find what cc the ported heads are? I’m thinking 76cc but not sure. Looks like SM stopped offering them ported so info for them is no longer on the site. Did anyone save a screen shot of the ported information? Thanks

I am pretty sure I remember the ported heads had a 78cc chamber

they are 78cc, discontinued now or atleast advertised as 78. i havent cc'd mine yet to know for sure