Oregonsparkie, you're probably thinking of some of the high-power offbeat military stuff ... which is 400hz. (Mostly used in aircraft applictions, I believe.) A lot of the smaller gensets are the typical 60hz.
Opus, we just acquired a (1965 vintage) 3kw military genset with a 4 cyl Wisconsin engine, typical military 24v starting system. It's the typical 60hz and is capable of 110/220 operation.
I haven't had a chance to get it running yet - got it surplus from a city auction. They removed the spark plugs for some reason, so there's no telling what condition it's in. (I figure even if the engine's bad, the generator should be good.)
BTW - which Chrysler engine is attached to the one you've got? What year model is it?