I am tearing down my 455 to fix some oil leaks and plan to do a re ring and bearing job. Question though - I am used to seeing the std or oversize marking on the back side of the bearings. My Clevite rod bearings are indeed marked .010 over but none of my mains have an indicator. Some online info say these are .010 over but why doesn't it say on there?

 

I would guess they are "standard" and shouldn't need marking to denote other than OEM size. Did you "mic" the journals to verify journal size ?

 

Usually standards are also marked and read "std" - usually. I'll borrow a mic and check k it out. Are 1, 2, and 4 mains the same?