340 Hydraulic lock inspection update...

You need to find out where the water is coming from--the seat in the head or a split cylinder wall? Also looks like heavy 3/8" valve stems--Why? Was this engine built in the 80's? Pics of the other side (good) valvetrain could help. Looks to me like valve float from too much RPM for the spring package--intake valve tagged the piston bending it slightly--then the valve head just bends back and forth everytime it slams down on the seat until it snaps off. J.Rob