Dunno if its an N/A thing or not - but I have no trouble hitting 1300+ with it floored.
Idles at ~300-350 depending on ambient.
Cruise is 800-900 at ~65.
80 MPH is ~1100-1150 steady.
Have to really watch it trying to accelerate a load (20-30k) - it really wants to jump then.
Drives like a granny should loaded in traffic (trying to keep it <1250 or so).
No serious smoke at any time. Generally none at all.
1991 F350 7.3 N/A DW steel bed. No mods other than electric fuel pump.
Old Mack (Mack engine) I had never got above 900 even dragging a load it didn't want to pull.
Old Kenworth wrecker I once drove stayed around 800, 950 loaded on the freeway.
The Autocar pole truck never got over 600, but I think the probe was bad. Maybe not.
Old Mack winch truck (Cummins M11) stayed at 400, but it never left the yard, so I can't really say about it.
Seems that the old tech ran a lot cooler ?
24V Dodge 2500 (1998.5) idles about the same, cruises at 550-600 at 70, and you really have to hammer it to get to 1100.
Dodge gasser stayed around 1300 - I guess gas engines have different rules.
I'll toss one on the C-70 (427 C.I.) some time. Shouldn't have a problem loading it down. See what it does.
Wildly different numbers just on the stuff I've got.
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