A question for fast - in theory, wouldn’t weaker valve springs allow quicker and more violent lifter separation/pump up?
Wouldn’t weaker valve springs take longer to “pump down” the plunger versus a stronger spring?
I would think so.
In my case, the tired old 361 had the 100,000 mile stock single-without-damper springs...... so not much pressure.
So in my mind ( and you seem to agree a bit ) a weaker spring would take longer to pump the plunger down - and that may be why some engines like Ron’s buddy and your 361 too so long to regain compression.
Of course other factors may play in to this - condition of the lifter itself and maybe actual cranking oil pressure, would be a neat experiment.
