long stem valves and raising rocker shaft

Wait.

With a .060 pop up retainer and +.100 chevy app valves I can get about 1.85/6 without milling stands, the the valve tip is right at the edge of being too low in relation to the retainer with it being cut to the 1.915 [spot on geometry]..though it's good and would work.

the other way you could get the height but maybe not have perfect geometry is to run a pop up super lock on a comp '741' retainer.

Im pretty damn sure you can cut .030 out of the spring pockets/seats, after that Im not so sure.