What is idle rpm supposed to be on the V10 engine?

I just bought a used 2000 Excursion with the 6.8 V10 and it's idling at 750 rpm or maybe a little higher when in gear and near 900 rpm when in Park.
What rpm's are these engines supposed to idle at? The air conditioning being on doesn't change the rpm either. Thanks in advance.
Ben
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That sounds about right.
Jeff

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There is probably a sticker on the bottom side of the hood that lists the idle RPM.
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Clarence A Dold - Hidden Valley (Lake County) CA USA 38.8,-122.5
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