Uh-oh, 440 cam bearing oil holes misaligned

[DusterDave]

After bolting up my freshly machined 440 block onto the engine stand, I noticed the #4 cam bearing holes that feed the rocker shafts are partially(about 40%) blocking the passages. The crank passage hole is perfectly lined up, but the rocker feed holes will not line up, as if they are not spaced correctly. I thought about buying a long 1/4" drill bit, and from the deck, opening up the holes in that bearing. Should I do this or not?

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[440 demon]

Dustdave,I had a 360 block done a few years ago and when i got the block home i noticed the same thing i took the block back and had them put a new bearing in.They said they did that in there dirt track cars to bring up the oil pressure.I think they were in a hurry to get this mopar block out.I don't know if i would cance it with the drill, all it would take is one small chip to get into the system to cause a big problem.It's the machine shops problem i bet if you took it back they would fix the problem.