LD340 before and after porting numbers.

pittsburghracer said
One port only. Way to much work removing the head, switching the valves around, remounting the head, readjusting the valve opener, etc. I have a head to finish, a TrickFlow intake showing up and starting this show all over.

I need to PM You about Your bench setup, when things slow a little post race season,

I've resorted to this method for those PIA pics...