Small block oiling issue

do you have an oil pressure gauge? not a dummy light but an actual gauge?. if not, i would get one. is it making any noise? remember rule of thumb is 10lbs for every 1000 rpm. my 360 is fresh. it runs at 65 cold, once it warms up it drops to around 20-25. when i take my covers off, i dont have a bunch of oil up top either.