ron.dittmer wrote:
I wonder if "some" of the reason why the 2007 E350 and earlier years, the Ford spec'd rear axle limit of 7800 pounds was stated as such because the rear end was not equipped with any kind of rear stabilizer bar or trac bar.
It's because the E350 was equipped with Dana 70-2U. For a handful of years, some came with the Dana 70-HD, which was rated at 8500 pounds.
The E450 has a "Modified Dana 70HD", which is sometimes listed as a Dana 78, and is really a Dana 80 housing with a Dana 70 carrier. The older E450s with 4.63 gears have a true Dana 80.