I currently have a 13 Ecoboost. Engine specs are 385hp/420lbs torque. My truck has a little issue pulling my 7k lb trailer even though I'm rated to pull 7900lb max based on the wicked formula you use.

Anyhow, i'm in the market for a bigger truck I've been eyeballing the F250 diesel and gas truck.
I can't see spending all that extra money on a bigger truck when the gas engine specs is similar (HPnos same, F250 has additional 20lbs torque) To my Ecoboost. Am I missing something here? I'm guessing if I were to get a gas engine in the F250 I'm going to have the same struggling issue with pulling a 7000 pound trailer as I am right now?

 

It's struggling because of poor low end torque. Ecoboost 3.5L makes 420 lbs.-ft. of torque @ 2500 rpm.

Ford Ranger T6 3.2L (Diesel) makes 470NM 350 lbs. ft. of Torque @ 1500 rpm.

 

So 405lb of torque at 4500 Rpm is a lot better?

 

NOPE, more torque at low RPM is much better.

 

Wow! So getting a F250 gas Will put me in a worse situation than I'm currently in with my F150 eco-boost?

 

YUP, turbo produce a lot of low end torque. 3.5L non-ecoboost will only make 253 lbs.-ft. @ 4250 rpm

 

Damnnnnn! I have been eyeballing the diesel super duty, and in the meantime I came across a lot of good super duty gas trucks but seeing as how getting a super duty gas is going to put me in a worse situation than what I'm currently in right now with my eco-boost I guess it only makes sense to get the diesel

 

How big is your wheels? Using smaller wheel will fix your problem.

 

On my truck? I think they are 17"

 

The reason why E150 can tow much better than F150 (Same Engine, Transmission & Axle) is because the it's using a smaller and lighter wheels.