Gonna try to make this short, 486 build, girdle, all block oiling mods done, SRE pan, Internal pickup, ta grooved cam bearings. Ta cover, booster plate, stock pump housing. Lifyer valley epoxy plates with holes drilled for returns, .020 restricted pushrods. Primed it on the stand with no intake on and drainback seemed fine. Fast forward a few days, get the engine in the car, oil pressure seems fine, notice a oil leak from back of engine (I was half expecting that) with the engine running, I put the car up in the air to investigate, while it idles, see what I needed to see, and when the car gets back down I go to turn it off and notice the oil psi was less than 10. Immediately shut it down. (Was idling with 25-30ish. Mechanical gauge btw) Check oil just because. Its fine. Crank it back up, no noises, pressure is good. So I Rev it up to 2k rpm and hold it. Pressure stays at 40lbs. Holding rpm I notice the pressure go from 40 to less than 15 gradually and I shut it down. Pulled the engine today, noticed a slight amount of material in pan, so I pulled #1,#4, and #8 rod cap off, and all show obvious signs of wear. Mains were tighter than we wanted but all .0028-.0032 and rods .0035-.0038 Any suggestions? Oil drainback? Before I pulled pan I did prime the engine with a drill (max 1k rpm) to see if I could get the pressure to drop and it held a steady 50lbs for 2+ minutes with no drop. Checked oil and stick and it showed about 1qt low but still plenty of oil (trying to see if drainback was an issue) At this point all I've torn apart is the 3 rod caps, no mains, nothing else. Less than 10 minutes of run time. Looking for any, and all, constructive advice or recommendations. Thanks in advance.