Originally Posted by
The_Joe
I'll ask the simple question first. Are you sure the BB is installed the right way round?
If OP was able to put in a bottom bracket backwards against the threads on both sides I doubt they'd need us at this point.
e: to be actually helpful - try it. install the chainrings and order a crank puller if you haven't yet. If it bonks anything, you need a longer spindle. Different bikes have different chain stays and so on, usually the spec sheet steers you right but you cannot be totally sure without trying.