Well, not really. Everything has it's limits. When an impact wrench will no longer rotate the nut it is trying t turn it has reached it's limits. The limit on my impact was somewhere past 150 lb-ft with a fully charged battery. I imagine that number would drop as the battery loses power.
The bottom line after my test is I think my 24 volt impact will do an antiquate job of tightening the crankshaft bolt. When I replaced the balancer years ago I used a breaker bar with a short cheater pipe on it but I didn't do a good job getting the bolt tight because I had a hell of a time keeping the flywheel from turning. They make tools for that purpose but I don't have one.