Compression Ignition Addict
Join Date: Mar 2006
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Just a word from Down Under in Oz, where we tow Bushtracker vans for a living.. Which are not heavy as a big one will only go about 8000-9000 lbs.. But I tow some other heavy things, tri-axle loaded trailers and such... Go the 410s.... That is what is in my F-350 KR CC LWB 4x4...
The 430s will kill you on fuel... The 410's are plenty adequate, you just do not need to go higher unless you were towing a 35' gooseneck delivery van for a living or something... I am running right on 2000 rpm at 100 km per hour... Any RPM over cuts into fuel economy.. An F-450 running 430's is not happy. Too Extreme, the 410's seem right....! Would do them again...
And the Tow/Haul mode on the autos is awesome is you do a really big job..
Regards from Oz, out on the last frontier, still working horses...