Absolute minimum axle on the 'Burb for that trailer is a 3.73. You will also spend a lot of time in 3rd gear at the mere mention of a hill. In the hills, some 2nd gear and high RPMS. Max towing speed will be 60 to 65 mph and about 8.5 mpg.
We tried 1992 5.7L 2500 (3/4 ton) with a 4.10 axle and a 28' Silver Streak trailer. It would tow it but not well. I would limit the "Burb to closer to a 25 or 26' trailer and watch the weight.
Ken
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Amateur Radio Operator (KE5DFR)|No Longer Full-Time! - 2023 Cougar 22MLS toted by 2022 F150, 3.5L EcoBoost Tow Max FX4 Lariat Travel with one Standard Schnauzer and one small Timneh African Gray Parrot, retired mechanical engineer
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