Does anyone make AMC Stainless valves with 5/16" Undercut stems in the runners ..... there a gobs of undercut stem valves for Chevy/Ford/Mopar. I've done the valve swap on 258 heads to Chevy 1.94" int &1.50" exhaust using Milodon Megaflow valves (undercut 5/16" stems in runners) and picked up GOBS of useable torque and power in low-mid RPMS.
Has ANYONE come out with these for AMCs ... it would save about $250-$450 in machining for Chevy valves.