low oil pressure at idle on 383 sbc

[1982chevyc10383]

hi im new on here and I cant seem to have anyone help me figure out my oil pressure problem on my 383 sbc in my 1982 c10. I just put this motor in about two months ago. im running 20/50w and at hot idle its running about 8-10 oil pressure. my dad bought this motor around two years ago unfinished. the pistions, rods, crank, and there bearings, and the cam bearings were installed and it came with a set of vortex heads that had work done to them. I bought it from my dad this summer and saved all my money to finsh it for my truck. its got a compcams 480. 480. lift roller rockers comp double roller timing chain and comp push rods. its got a high volume oil pump with the stock pan. im only seventeen and don't have a lot of money and this truck is my baby. thanks for time and help