Stovebolt cams have 4 different size bearings, reducing in size from front to rear. Here's the dimensions:

Small journal cam Federal-Mogul bearing set 1094M
1: 2.028/2.029
2: 1.965/1.966
3: 1,903/1.904
4: 1.840/1.841

Large journal cam Federal-Mogul bearing set 1170M
1: 2.153/2.154
2: 2.091/2.092
3: 2.028/2.029
4: 1.966/1.967

I don't see any reason a large journal cam couldn't be ground down for the small-journal bearing set unless there's a big difference in the lobe height that would prevent the lobes from passing through the small journal holes in the block.
Jerry

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