Don't feel like you need to explain... you won't win. You should see some of the other threads! (Maybe you have...)

For the record though, I don't "need" diesel, but I went with it because I just like lower rpms and better gas mileage, regardless of up front cost... lets be real, if I didn't put that extra $7,690 up front on the 6.7 engine, it would have been on something else, so a gas burner wouldn't have been any less expensive... lol! I decided I wanted more grunt and less bling though...

 

Per their guide you need a long bed or 3.55 gears to tow over 15,000 conventional in your F350 diesel platinum. With that it would jump to 20,000.

I would usually think not to worry with it but with the weird supply shortages a 3.31 truck could show up with a 2.5 inch hitch rated to 15,000 as thats all it needs. You would want the 20,000 3 inch hitch for your boat.

 

I see that his current truck is an 18, which likely has different towing numbers, but it looks like he is asking about ordering a new one... In which case, looking at the 2022 towing guide, for the 350 it shows that both the short and long wheel base, 3.31 and 3.55 gears equipped with the 6.7 can tow 20k conventional.

Also, concerning the hitch size, the gear ratio doesn't really affect which hitch size you get. (I have a 250 w/ 3.31 gears on order and it will come with a 3" hitch receiver.) Here's the information from the towing guide on which trucks come with which receivers.

 

LOL, This is a diesel question, as in 1,050, not the half torque engine.

3:31 rears if you plan on keeping the same rubber.
Big tires and heavy towing ? might want 3:55.
Either way, the gearing is so close that it really won’t matter with the 6.7L. 10 speed

 

Yes you are right I didn't read the sub note correctly. I had it backwards. It would be rated for 20,000 with the 3.31.

 

sold point
I’m going to look into that one for sure
I would think they all should come with the 3”
but damn would I be pissed when it shows up to the dealer without it
maybe build sheet will tell me

 

I was wrong per the above!

 

In the almost 6000 miles I've owned my CCLB F350 Diesel Lariat with 3.31 gears, I've towed almost 15k lbs around 4500 of those miles. I drive over lots of mountain passes in Oregon and Northern CA. Siskiyou summit for example on I5 is over 5k ft elevation. I have not once, ever, while towing wished I had deeper gears. Period. I pass semi's without issue. I cruise at the speed limit or slightly above without any drama. I'm averaging 12.8 MPG with my trailer. The only thing that would make me happier than the 3.31 gears is if Ford and Dana hadn't screwed me on the axle tube thickness and then tried to bandaid the problem....

 

My new ‘22 F350 CCSB Platinum diesel is coming with the 3.31 gearing, and your post makes me feel more than confident that the truck will be able to handle whatever I can throw at it. Whew!!