Originally Posted by fshrfwl
I tow a 29' house trailer 3-4 times a year and do a lot of town/country driving.
I'm a firm believer is having "enuff truck" for your max load. So to tow a 29' TT with an F-150 EcoBoost, you need the HD Payload pkg so you don't exceed the GVWR of your truck when towing.
The HD Payload pkg includes 8,200 pounds GVWR, the 3.73 limited slip rear axle and the max tow pkg (towing mirrors and intregrated trailer brake controller (ITBC)). That's about 500 pounds more GVWR than with the max tow pkg, and 1,000 pounds more GVWR than the standard F-150. No, you cannot have the electronic locking rear axle, and no you cannot have a 5.5' shorty bed with the HD payload pkg. So a SuperCrew will have "Posi-Traction" and the 6.5' bed. That's a shorty in the SuperDuty world, but it's the long bed in an F-150 SuperCrew where the tiny little 5.5' shorty bed is available without the HD Payload pkg.
Dealers don't keep the F-150s with the HD Payload pkg in stock, so you'll probably have to order it and wait 6 to 8 weeks for it to arrive at your dealer's store. So plan ahead.
With the EcoBoost engine, there are no significant disadvantages to the 3.73 axle ratio. Owners report about the same MPG I get with my 3.15 axle ratio, whether towing or unloaded. The limited-slip rear axle works fine after you learn how to use it. I prefer my e-locker rear end, but I've made do with a posi-traction axle for dozens of years.