Thread: High Capacity Trailer Towing Specs

Thanks Smokey, that helps me alot.

Not real sure about that year, but my 03 F450 has a Dana 135 rear axle, 4.30 gears, square axle tubes, not normal for the F450, but it being a construction company truck I figure they upgraded to the heaviest package they could get and still be classified as a 450...

Not much info available. The order guide for a 2005 and 2006 F-550 said only that diesel engine and 4.88 limited-slip axle was required, and that the pkg included an "upgraded" rear axle. The axle is a Dana/Spicer 110, but somehow the one with the high capacity towing pkg is different than the standard Dana S-110 limited slip 4.88 that is optional in the F-550 without the high capacity towing pkg. The 2006 Ford Truck Source...