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Old 11-28-2012, 06:06 PM
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Originally Posted by 95chevy406 View Post
Well my local parts store has them for over and undersize main bearings
As said earlier you want 0.010" undersize bearings. The package will often have -10 as a suffix, or just 10.

The individual bearing shells are also marked for size. The King bearing below is a 0.010" undersize bearing:

There are 0.001" and 0.002" oversized bearings, sometimes used to selective fit bearings to journals for a closer tolerance. These are called X and XX bearings, respectively. I'm not aware of over the counter oversized bearings for a SBC that would be 0.010".
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