Class C Trailer Towing Capacity
I know there are a ton of discussions on this but i searched the sticky thread on towing and all the info. was from 2004. Please feel free to direct me to other threads if needed. I would love to he...
Forum Discussion
theoldwizard1 wrote:carringb wrote:
BTW - Running over 20,000 on the older 10.5" ring gear can cause elevated diff temps. At some point Ford changed to a 10.75" ring gear across the board, and then gave the E450 its 22,000 GCWR. I run as heavy as 25,000 combined but at 22,000 pounds, when it's at or over 100F, I can max out my diff temp at 250F after about 10 miles of pulling a 6% grade.
To be more clear, that is NOT just a ring and pinion swap, but a whole different axle assembly ! Probably not worth the cost compared to a newer chassis.
Correct. You can't just swap the gears. And swapping the whole assembly may not be easy either since 2007 was the last year of the old 3-channel brake system, which means it's the only year axle with the slightly larger ring gear that can be swapped into and older E-series.
Note: Some pre-2003 E450s did get the 11.25" ring and pinion, but not across the board and I can't find any rational how some got it and some didn't. The only was to know is to reference the door tag, and if the axle code = 4.63 instead of 4.56, it has the 11.25" gears.
