The springs want a 1.9 installed height.
I got ferrah 5055 and 5054 stainless 3/8 valves.
COMP Cams 911-16 springs
COMP Cams 612-16 - COMP Cams Super Valve Locks
COMP Cams tool steel Retainers 1732-16
I am trying to research if these will all be happy together on the 516 heads as I cant mill down into the spring pads.
I thought if I could get some info on what others have used I could connect the dots. From what I read, the retainers will add .125 to the height so it might be perfect or a shim will make it so. I just dont want to be short because the spring pressure will increase