valve stem height - need some help

halfafish said

Many thanks for the input so far. I was hoping my valve spring tool would arrive today, but alas, it's in UPS purgatory at the moment. Perhaps it will get here on Monday. Once it arrives, I will get the heads disassembled for a better look and more measurements. My original intent was to go hydraulic, but it appears I will going solid lifters now. More on this to come...

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I pretty much agree w/ rrr and yellow rose------
In some instances tho ,lash caps are required , we used them on a s/s hemi engine quite succesfully w/ a hi 785 lift cam.
I think the heighth diff, is because of the depth of the hardedned valve seats and their machining in the chambers .
The springs are not the problem , a 300# spring will not be any diff. than a 400# spring as far as valve length .