360 oiling problem under load

Dartish said
I wenthru every passage with brushes,soap and water bath,and blew everything out after it was hot tanked. This was AFTER the achine shop blew everything out to make sure everything was open after they installed cam bearings and this problem didnt show its ugly head til about 4000 miles. Im prettyconfident it was all clean. Everyone tells me ive got ocd when it comes to cleaning and checking clearances. Not saying i didnt overlook something, but its very unlikely since it ranfine and still has same oil pressure as when i built it until i climb a hill and ease into throttle or or try speeding up to pass a car. Very light load the op doesnt drop, but go from steady rpm and speed to 1/3 or more throttle it drops. Heres a NEW one to add to the list! Started it this morning after sitting overnight and had a lifter tick for just a second til op got up. Not even a full second but its never done it before. Maybe coincidence???? Theyre sumnit brand lifters and cam

Well well well, everybody ready to hear the problem?????? While i had it in the shop, i was checking the carb,cap,rotor etc and noticed oil leaking out of my new Accel coil, new Accel cap and rotor were all burnt looking inside with brush to coil tower about gone. Did this cuz i noticed it seemed pretty sluggish, was burning alot of fuel and running rich. Put an old 20yr old coil on, have to get cap and rotor tomorrow. Put a fram filter on against my better judgement but its all i had. Drained oil and refilled with some 10w40 i had. No zinc additive or lucas stabilizer, which ive ran in ALL my flat tappet motors and theyv all got hi miles on them. Drove home. Idled and ran same pressure as before. Just outta curiosity, i eased into it going up a hill, no drop in pressure. Got into it a iittle more. Finally kiked it into low, wot and ran it thru the gears up to 5500. NO DROP or flutter on the gauge. Gonna run it some more tomorrow. NEVER had a filter do this only under a load and after the oil warmed up