But the old flat valve versions that had 32mm/28mm valves use to flow 120cfm @ .500" lift.
While the hemi style billet head had 34mm/29mm valves and flowed 150cfm @ .500" lift.
So a little update on post I did a small Port job on my hemi head and then sent it out to get bigger valves put in the head and paid a little extra to flow my head with the new valves I got 94cfm very happy to know were i stand with my head
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