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I have a 330 in my C600 truck, I am curious what other engines might use the same bolt pattern on the bell housing? How about the crankshaft flange? It has a Allison auto behind it if that helps?
OK, but I see you also asked about the crank flange.
AFAIK based on other posts here, the bolt pattern is the same. The pilot hole could be larger for your engine. Some 330s were "medium duty" and were the same as FEs. Double check that before you do any swap purchasing etc.