Tugging power?
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
T4? SXE? Whatever happened to the drop-in KC38R? Stock intercooler is fine. Some have tried to upgrade this, but the results didn't warrant the hassle and expense. Now as for the transmission cooler... different beast - upgrade that.
FTE Leadership Emeritus
Joined: May 2014
Posts: 27,346
Likes: 5,941
From: Lake Hartwell, GA
Below is a link to my decision and main points of how I arrived there.
https://www.ford-trucks.com/forums/1...been-made.html
Preview of the price differences based on my own research.
Thread Starter
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Senior User
Joined: Jun 2018
Posts: 111
Likes: 2
Thanks for all the info and help. I have some homework to do with the info you have provided.its good to have info from those who have been there and done it,and know what works and what dont.Also I think I will add a topper to the truck, it might help get some air off the front of the trailer
Cargo Master
Joined: Mar 2008
Posts: 2,975
Likes: 19
From: Archdale,N.C.
Maybe swap out the 4.10 gears for 3.73 for more towing oomph.
We tow a 38'travel trailer which is about 11500 loaded, 11.5 tall with an 1100lb golf cart in the bed and The Mule doesn't struggle. Stock injectors stockish turbo. All the common mods and more OCD based maintenance than I care to talk about.
OH and I get a solid 12mpg towing.
We tow a 38'travel trailer which is about 11500 loaded, 11.5 tall with an 1100lb golf cart in the bed and The Mule doesn't struggle. Stock injectors stockish turbo. All the common mods and more OCD based maintenance than I care to talk about.
OH and I get a solid 12mpg towing.
Cargo Master
Joined: Mar 2008
Posts: 2,975
Likes: 19
From: Archdale,N.C.
I edited my post. 3.73s won't give him "high" RPMs, but it will be "higher" RPMs. But it puts the 7.3 right in the sweet spot for towing. JMHO
Fleet Mechanic
Joined: Jul 2010
Posts: 1,753
Likes: 34
From: Los Angeles, Ca.
Other way around. He's suggesting to gear it up from 4.10 to 3.73, which seems backwards to me.
Mountain Pass
Joined: Dec 2013
Posts: 234
Likes: 0
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FTE Leadership Emeritus
Joined: May 2014
Posts: 27,346
Likes: 5,941
From: Lake Hartwell, GA
I am not sure how much you know about turbos and how they they help the engine, but I was mistaken when I originally thought more boost was better. As I elaborated in my post linked above about my own personal decision to go with the SXE from Borg Warner, good air flow and equal pressure is the key.
One more quick note, bigger is not always better when talking about turbos. Size the right turbo for your application. Just because a 369SXE is performing well on another truck does not mean it is right for you.
One more quick note, bigger is not always better when talking about turbos. Size the right turbo for your application. Just because a 369SXE is performing well on another truck does not mean it is right for you.
Thread Starter
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Senior User
Joined: Jun 2018
Posts: 111
Likes: 2
I am not sure how much you know about turbos and how they they help the engine, but I was mistaken when I originally thought more boost was better. As I elaborated in my post linked above about my own personal decision to go with the SXE from Borg Warner, good air flow and equal pressure is the key.
One more quick note, bigger is not always better when talking about turbos. Size the right turbo for your application. Just because a 369SXE is performing well on another truck does not mean it is right for you.
One more quick note, bigger is not always better when talking about turbos. Size the right turbo for your application. Just because a 369SXE is performing well on another truck does not mean it is right for you.
Postmaster
Joined: Nov 2015
Posts: 4,807
Likes: 125
From: Colorado Springs
I went from 3.73 to 4.10's here in Colorado average elevation 6-13K feet. My RPM's only went up around 200 across the spectrum, I did lose a bit of mpg's but I bought the truck to pull not be a hybrid. I would never go back to 3.73.
Laughing Gas
Joined: Oct 2016
Posts: 1,073
Likes: 91
From: DFW, Texas
I have been a gear head all my life,but I have never messed with turbo's. I understand how they help make power ,but need schooled on which size is the correct size. From what I have read so far it looks like the 364.5 is what I need. I would like to have the power I have now with the 80 hp tune from DP-tuner or just a little more ,and be able to hold WOT pulling my toyhauler up a long hill without going over1250 depress EGT. I can't do that now on the 80 hp tune. I can do it on the 60 hp tune ,but my speed drops off from 70 mph to around 58 mph. That's not real bad all things considered,but I want it just a little better. My gearing at 4:10 helps to a point,but when the truck shifts down at speed then it hurts. For it to drop into 2nd gear I have to be down to 42 mph so it don't over rev the engine. So on the highway I really only have drive and overdrive to work with. On a 2 lane road ,the speed is slow enough that if it drops into 2nd gear ,I am not going fast anyway. I live in the hills and the mountains of West Virginia are just across the river.
What I did not say in my review is my father in law also towed a much larger trailer with his dully (stock tires 4.1) and same turbo setup as me and his results were a mirror image of mine except he did it all a gear higher.
From my experience, towing with an sxe there is not speed dropping due to EGTs. I can't say the same for the stock turbo or the Ball Bearing turbo I tried.