[Excaliber]

Back in the day, on various FE models, hydraulic valve adjustment was made by installing different length push rods. I believe they were colored coded for length and readily available. No adjustment on the rockers, so it's not an unprecedented method.

I don't know how you would do it on a SOHC! Must have something to do with those lash caps mentioned.

Original iron block and heads, yeah, I can dig it, just the kind of thing I'd like to run.