I pulled two main bearing caps on my 400 SBC to inspect them. About 2 inches in the center of each of the bearing looks copper colored. They are smooth except FOR at one end of each bearing where for 1/4" they felt slightly rough, Considering the rotation, that would be the end where any debris would collect. The crank looked perfect. Anyone have any pictures of normal bearings or thoughts? Is this normal? thanks FYI - changing a motor in my COE is becoming a real pain in behind!!! I'll post pictures later.