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Ordering a 2022 F250 10 speed Auto
I have a Bighorn fifth wheel at 12,500lbs.
Present truck is 2017 F250 6 speed Auto
The 2017 has problems pulling out on a hill with trailer. It jumps if I accelerate too hard. Have to back off and accelerate slower. I know there were some issues with pinion input hop so not sure if this has been addressed in later models. At any rate, I have a choice to make.
New truck can have 3.31, 3.55, or 3.73 locking differential. Dealer wants to spec 3.31 (that's the no charge default) I don't know what gear 1 drivel ratio was on my 2017 but is probably a moot point with the new 10 speed.
What do you think a good compromise between towing and a lot more non towing driving would be for a differential choice?
What engine does your present and future trucks have?
Here are the axle codes from the 2017 Towing Guide. Look on the driver door jamb for the white and black sticker that shows the factory codes. That should be accurate unless someone has changed the axle to a different gear ratio.
What engine does your present and future trucks have?
Here are the axle codes from the 2017 Towing Guide. Look on the driver door jamb for the white and black sticker that shows the factory codes. That should be accurate unless someone has changed the axle to a different gear ratio.
its the 3J 331 locker in my 2017. I was just wondering with the 10 speed vs my present 6 speed if It would be better to go to the 355 locker.
For a fifth wheel, I would be ordering an F-350, not an F-250. But you're probably getting the gas engine, so that gives you a some breathing room for cargo capacity. I have an 11k bumper pull toy hauler that I pull with my truck. I have the 3.55 axle. For a gas engine, I would go with the high axle ratio. If you're a flatlander, the lower axle ratio may be OK.
For a fifth wheel, I would be ordering an F-350, not an F-250. But you're probably getting the gas engine, so that gives you a some breathing room for cargo capacity. I have an 11k bumper pull toy hauler that I pull with my truck. I have the 3.55 axle. For a gas engine, I would go with the high axle ratio. If you're a flatlander, the lower axle ratio may be OK.
I have pulled my Bighorn with the 2017 F250 for 5 years now. It is a fantastic truck that handles the Bighorn 35' 12,500 GTWR with absolutely no problem. No gas engine for me, the diesel is a beast. The extra leaf spring you get to make a F250 a F350 impacts the ride more than I want. I never exceeded the RAWR on my F250.
3.55 will make it feel like more of a 'beast' with that trailer behind it. And with 3 OD gears in the 10spd, the 3.55 will be similar to your current 3.31 at cruising speed.
Either gear will tow it fine though, so don't sweat it
You can only get the 3.31 in your combo unless you option the high capacity tow; same truck as an F350 srw but with 65psi in the rear tires and comes with a 3 inch hitch which you don’t need with your 5th wheel.
You can option the Elocker for like $390. If it saves you from getting stuck twice its at least paid for itself but if you never needed it on your 17 as you didnt know it had it... save you coin.
You can gain some gear back with 18 inch wheels over the tall 20s. You can gain a rear over load and 400lbs more rated front springs with the camper package.
I have the 5th wheel prep package on my 2020 F-350 4WD SRW 10 speed 7.3 gasser, although I'll never use it.
It has over a 4K pound payload rating and the e-locking rear axle.
It comes stock with the 4.30 rear end.
The gasser has a 26K pound Combined maximum tow rating. CGVWR. Diesel is even more.
This is the ideal ratio to start and move a heavy load since it puts maximum torque to the rear wheels right off, especially if you are contemplating 35 inch tires or larger.
The top 3 gears in the tranny are overdrive gears, so you will always have a close-enough combination to satisfy your engine's needs, whether gas or diesel.First 4.615:1
Second 2.919:1
Third 2.132:1
Fourth 1.773:1
Fifth 1.519:1
Sixth 1.277:1
Seventh 1:01
Eighth 0.851:1
Ninth 0.687:1
10th 0.632:1
Reverse -4.695:1
The combination of either a 7.3L gas or 6.7L diesel engine coupled onto the new 10-speed is a total game changer for pulling or hauling heavy loads.
