@fordmdb Any chance that you can overlay a Stock 3.5 Eco with the 10 speed and a Stock 7.3. While the peak TQ are similar at the crank I would like to see the entire RPM range and how each engine puts the TQ down. My travel trailer is about 8,500 loaded and I will be upgrading from an 18 F150 3.5 with 3.55 4x2 to an F350 in the near future. My truck weights 5k on the dot, and I’ve never found myself needing more power.

When I make the trade I will be increasing the curb weight of the TV by 40% to 50% thus very interested in how the 7.3 is putting down the TQ.

From what I’ve been able to see, it seems like the 7.3 is putting down about 20% more TQ below 2.5 RPM and around 5% less over 3k.

I live in Texas so I don’t climb many grades as much of our camping is within a 500 mile radius of DFW or out East to the FL panhandle. Much of the time the eco is able to accelerate and lives in the 2.5 to 3k RPM range. By what I am seeing by interpolating and accounting for the heavier SD I might end up with a similar towing experience with regards to powertrain drivability. I know that suspension wise and ride quality loaded will be night and day difference.

I would appreciate the graph if possible. And while I’m requesting, 3.55 gears on each truck if able. Thanks again

 

ill see what i can dig up , i made the comment the other day to a co worker that it tows just like the 3.5 eb trucks , i have had in past .

 

That is an encouraging statement. I had an ecoboost at one time and it was a great towing motor.

 

^^ yep, I'm coming from a 2016 3.5 ecoboost. Power is fine for towing my 9500lb boat/trailer, but chassis/brakes are undergunned for the task. Looking at a 7.3 Tremor. Still haven't decided on 3.55 or 4.3, but leaning towards 4.3.

 

4.30 without a doubt

 

Tremor only comes with 4:30 gears in the 7.3 gas.

 

I don’t think that is correct, unless ford’s custom build webpage is wrong ... it lets you select 4.30 or 3.55 with the Tremor package and 7.3 gas engine.

 

Sloot is correct. Only 4.30 gears when opting for Tremor package with 7.3 gas.

 

i just tried it on a f350 and if i select the 3.55 it says the diesel is required for that selection. if you skip the gear selection and go straight to package selection and chose the tremor it gives you the 4.30s. on the 7.3. if you try and pick any other package it says tremor package must be removed.

 

I think 250 vs 350 is the difference ...
F-250 Tremor with 7.3 Gas = 3.55 or 4.30
F-350 Tremor with 7.3 Gas = 4.30 only

 

This is exactly my situation.
i would also really like to see the 7.3(3.55) compared to my 16 3.5(3.73).

 

yep that worked.

 

here you go , dynod this 3.5 in Sept. of 2019 , really puts it in perspective i think

 

web page is wrong.
7.3 Tremor package only comes with 4:30 in 250 or 350.

 

That is an awesome graph and very informative for anyone who has towed heavy with the 3.5 Ecoboost. THANK YOU!

Feeling better about the 7.3 . . . .