Morris C8 Crankshaft specs.

[Lynn Eades]

Terry, Jeff should be able to guess closely what the original size was,judging from the type and size of shells removed?
I have some details here in front of me for bi metal steel backed bearings:
Babbit on a steel back is usually 0.004"thick.
Copper/lead is overlaid ) 0.008" to 0.020" thick
Tin/ Aluminium is the same, 0.008 to 0.020" thick.
(I guess a known steel backing thickness is needed)
Tri metal bearings are usually the same as the last two with the addition of 0.001" of babbit
Do you have a source of shells?. I guess you ask them to give you a shell tunnel size (measure them) and if they sound right, have Jeff grind to suit after you have them in hand?