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Old 04-17-2012, 10:37 PM   #1
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Upgrade towing capacity from 3,500 to 5,000 on Class C RV?

My 2001 Fleetwood Jamboree Class C, Chevy 3500 chassis (454) has a 3,500 rated towing capacity. Class IV hitch. Any suggestions to up the capacity to 5,000? For reference, I tow an '03 focus on a dolly which net to 3,300 lbs. RV fully loaded with gear, passengers, gas and water weighs 11,000. Max GCWR is 15,800 which means I have another 1,300 to spare, for 4,800 total. My goal is just to add a bit more towing weight margin. Perhaps the lower tow rating than some other brands are due to the strength of the frame extension?

History: '08 View, '05 Chinook, '01 Jamboree 24D, '78 Apache Popup, 81 Komfort Tlr,
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Old 04-18-2012, 06:50 AM   #2
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Something doesn't seem right about your assessment of the hitch capacity. A Class IV hitch should be good to tow a trailer of 10,000 lbs.
See this link: Trailer Hitches, Hitch Accessories, Hitch Wiring

You did mention a hitch extension though, which would de-rate the capacity of your hitch. What that de-rating would be is hard to know exactly, unless it has been already de-rated by the manufacturer and says so on an attached tag. Do you know if it has such a tag, and do you know how long the hitch extension is?

2004 Tiffin Allegro 27.5 ft. P32 18,000 lb GVW. 8.1 liter. Workhorse chassis built May 2002. 21,000 miles. 2012 Jeep Liberty Toad. RVi2 brake unit.
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Old 04-18-2012, 09:13 PM   #3
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Considering your load, and the tongue weight of that rig, I'd run it as is. I would no doubt be running some type of brake arrangement. Regarding increased hitch capacity, that's going to involve much more than just the hitch. Replacing that would be the tip of the iceberg. What it bolts to and how that's fastened to the part of the chassis built by GM would be next...
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