Any real difference between factory 340 and 360 connecting rods?

dibbons said
The engine is a "hodgepodge" 340 in storage that had small leak in the timing cover behind the water pump (see foto).

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You stated earlier that the engine is already .040 over; what are your plans? Besides timing cover replacement.........

Do you still have any bearing shells? If so, what is/are the date codes? What do the balance pads on the rods look like? Mostly there, or ground off?