You'd have to run the part numbers on it but I think it will require an injector change to get more snort out of it. It is most certainly possible to get about 10 more out of that engine without any real mods as it's just a derated version of the 4630 engine. What you will need to do is crank up the high idle if it's not already at 2400 or so. That will probably get you a bit more power but no more torque depending on where the high idle is presently set.
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