? Valvetrain Geometry ?

Yes 340 I was refererring to a valve job,but I'm afraid after i cut the valves there would be nothing left of a margin.I have a buddy who is a Manley dealer and his going to send me one new intake and exhaust valve to play around with. He said that he did not change any seats out,just cut them the last time he freshened them up for me.When I get them,i'll post some pics and we'll see if there is any difference. Thanks all for your replys