.002 Undersize Main Bearings

33IMP said

I used .002 under main bearings (I think from michigan) but that was on a big block, I don't know if they are, or were, available for a small block.
I used them as a shortcut, so I wouldn't have to grind a hard chromed fueler crank, and I was very disappointed in the final oil control, and I never ran the engine.
I think you will be happier if you can find a decent machine shop, and get it ground, rather than look for bearings that might not exist.

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Thank you for that reply. After researching online I can't even find old part numbers, or literature suggesting +.002 bearings were available for 360s.

I have read enough I feel if I can keep all my clearances consistent, and under .003 I will feel comfortable running those. Hughes suggest running .0022-.0030 on their mains and to shoot for .0020-.0025 on rods. I think the .0005-.0025 of factory spec is rather broad.

I did call a place local today that will grind and polish all the mains to 2.800 for $85. Thats pretty darn cheap but it makes me feel I need to be over their shoulder with a mic helping them.