Worth it to go big block?

[Yellow72C10]

I have a 72 k10, with a weak 350, mated to a th350. The trans is fine as far as I know, but idling up and Down the driveway doesn't account for much. Thinking very seriously about a crate motor swap, and I can't decide if its really worth it to go to big block. I'd like to make plenty of power, just like the next guy, but is it worth it in the long run? Any help and experience is greatly appreciated
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