Stop in for a cup of coffee
Looking at
this cam (SLD FLAT TAPPET CAM 254/260 -108ÂșLSA, .600"/.615")
and
these springs (145# @ 1.800", 375# @ 0.600" lift)
along with
these retainers (adds 0.100" installed height, puts me at 1.750", then I'll cut the spring seat 0.050" to get to 1.800" closed)
and
these locks (7degree 1-groove).
Now I need to find valves ...