I gots to have mo'par-ts!
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Lol jeezus packard
Well over the weekend I tried adding a pinch (1/2qt) of marvel mystery oil in and drove it for a bit. Seemed to subdue the clatter, especially after warmed up. Cold starts still were quite loud however. So I dumped the oil and changed to 5w30 conventional and a fresh filter. Still clattered away but I have'nt gotten a good drive post oil change, so I'll report back soon enough. I don't think it's anything like bolts backing out because the noise has gone away at times after it's hot.
Again I am curious if it has anythng to do with increased valve spring pressures. With my lift and installed spring height setup at 1.750", my pressures measured out Valve fully open @390lbs / Valve seated closed @160lbs. Do those #'s seem alright, or could it be overwhelming the lifters somewhat?
I think my next move might be to try adding more preload as musky suggested. That or maybe attempt adjusting on the fly using cut out valve covers.
Thanks for the suggestions guys.
1999 R/T CC Flame Red (what's left of the paint)
//SHAKER// 408 Forged // TKO600 5spd // Spintech-Mids // HiPoTek 106 LOPEYCAM // FRP Tuned //