Some progress and an attempt to get this thread back on track.
I wanted to get the pushrods ordered so I mounted a cylinder head with the PRW rockers on and checked max lift while I was there. I always find this interesting.
With .020" lash I/E the pushrod length works out to a really nice and nominal number of 7.500". This makes life easy.
Calculated and observed max lifts:
Intake lobe lift = .416" x 1.5 =. 624" - .020" lash = .588" actual lift for a net loss of .036" lift
Exh lobe lift = .399" x 1.5"=.5985"-.020" lash = .552" actual lift for a net loss of .046" lift
Food for thought. J.Rob
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