As long as the cranks fit the BB you're good to go. but the length of the crank is not what dictates whether parts will work together. So is irrelevant to both BB and frame. You do need to make sure you get a BB that will fit the frame though.
@Tenners started
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As long as the cranks fit the BB you're good to go. but the length of the crank is not what dictates whether parts will work together. So is irrelevant to both BB and frame. You do need to make sure you get a BB that will fit the frame though.