Have a machine shop check your block. It may be too bad for align bore. Depends on how much the metal has moved around. As for the crank. Bearings are available to .040 under.

I ran a big block Nova with a stock pan for years. Car ran 11.60's all the time. Driven to and from the strip. I would look for some sort of other oiling problem. Incorrect clearance, wrong cam bearings, wrong pump pickup to pan clearance, etc.

In this area align bore/hone is around $150.00