Chrysler factory B/RB & 426 Hemi cam bearing journal specs are:
1.7490 - 1.7480
1.9520 - 1.9510
1.9680 - 1.9670
1.9830 - 1.9820
1.9990 - 1.9980

Small block is the same as above, except the rear journal is 1.5615 - 1.5605

Regards, Chase