Wow--sounds like my afternoon--did 2 blocks this afternoon, one small block and a big block chev----on the big block--it seemed that maybe the 3 center caps weren't the ones that were off the block as the hone pattern was offset one way ---it did take another cut off the cap to get it so that we had a full contact pattern all the way around but also the crank centerline probably only moved up .003---

I have a lot of caps off old engines and I keep them for those missing one cap jobs---about any engine shop does the same.