^Hearing a lifter tick or not, 'less' engine noise relative to use of LOS/thicker oil vs thin, doesn't mean wear isn't occurring. Start up wear is worse with thicker oils than necessary for an engine at cold temps and being unable to flow where the oil has already drained out of the galleries over night to the pan/bottom of the sump.
Okay, so a tree falls in the forest(your engine has noisy lifters = tree falls), walk way out of range and have the tree fall again, did it still make a sound? Yes. Thicker oil simply muffles/mutes sound, doesn't necessarily 'prevent' wear by that alone. In fact, it will cause unnecessary wear by being overly viscous than needed.
If you want film lubrication to remain just add MoS2 like Lubro Moly sells, to dope up oil that doesn't have any molybdenum at all; sold at various Napa locations. That actually does something, it plates and keeps a film/protection layer between moving parts in the engine and tries to help with surface impurities. Takes several days to fall out of suspension and away from the top-end just like you say LOS has done for your racing apps.
I don't know all of the specifics, but if racing on 'street' oils you definitely 'could' have TOO THIN oils AFTER racing them so hard. You are using the wrong oil to begin with. Sure, use Lucas OR just get a thicker grade of oil(RACING oil) to begin with = problem solved.
Lucas for racing apps to fix a viscosity issue, which is present, doesn't mean street cars are having the same issues you are trying to prevent on those modified/non-street race apps. Neglected maintenance leads to engine wear, aside from factory mechanical flaws/defects, and cause more engine wear than using the 'correct' viscosity for your engine(that is to say, the correct viscosity of 'thick enough' is just that, ENOUGH thickness).
Using a thickener 'additive' with NO additives in it, not even zing, etc, is like adding water to soap which only dilutes the goods. Get a thicker grade of oil; ala step up a grade, for your racing apps.
I'd only use Lucas to gimp home for $10 instead of paying for a tow.