3.73 and E4OD - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 26 (permalink) Old 10-18-2011, 01:05 PM Thread Starter
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3.73 and E4OD

I am getting tired of winding my truck out so far going down the highway. I am seriously considering changing to a 3.73 ration in my rear since I want to change the fluid and put the SD cover on. The one thing I am worried about is that I have heard the higher ratio makes the gap from 3rd to 4th even worse. Anyone else ever heard that? I assume it won't hurt my towing too much and I rarely tow (less than once a month) and might tow ~13k lbs twice a year so if I take my time I hope it won't be that bad. So any experience going to a 3.73?

1996 F-350 CCLB dually, 4.10, 235/85R-16, ZF5, Tymar intake, Alabama Flowmaster, Isspro gauges, TS chip, Tightwad Mod
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post #2 of 26 (permalink) Old 10-18-2011, 02:26 PM
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Re: 3.73 and E4OD

Superdutys run 3.73s & don't have an issue with the 3rd to 4th jump. For that matter a lot of OBS have 3.55 gears & drive & tow daily without issues.


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post #3 of 26 (permalink) Old 10-18-2011, 07:53 PM
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Re: 3.73 and E4OD

So why do you have a dually if you tow so little?

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post #4 of 26 (permalink) Old 10-19-2011, 03:25 AM
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Re: 3.73 and E4OD

Could have been like me in the beginning. Needed a crew cab (3 kids, dog, carseats, etc), but couldn't afford a 4x4 CCLB. I had more options in used 2wd CC trucks if went with a dually. My wife liked the looks of them better anyway (she drove it as the daily grocery getter). I got a trailer and then a fifthwheel later. Cheers!

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post #5 of 26 (permalink) Old 10-19-2011, 04:33 AM
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Re: 3.73 and E4OD

Did the swap to 3:55 from 4:10 and Auto to ZF-5 as well as run 35" tires on the sig truck and love it. Not sure if you're auto or ZF? I really didn't care for the auto and love the ZF. With the auto seemed always on the peddle (fuel) then coasting....as I drive in mountainous terrain love the ZF. I only tow light 6-10K and the combo I have in sig works fine, I think a 3:73 would be real nice too perhaps better with the E40D. I ran the E4OD with 3:55s and 35" tires for a year and was always under the turbo on the highway swapped to the 1.0 A/R housing and was better but the real change was with the ZF. I would have liked to run 3:73 but had the other gears....I say do it!!

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post #6 of 26 (permalink) Old 10-19-2011, 10:24 AM
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Re: 3.73 and E4OD

I have 3:73 and an auto in my Bronco, and I love it. I will sometimes find myself speeding up a few mph to hit the shift point then backing down on occasion.

1995 7.3 Bronco
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post #7 of 26 (permalink) Old 10-19-2011, 01:51 PM Thread Starter
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Re: 3.73 and E4OD

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Originally Posted by diesel_brad View Post
So why do you have a dually if you tow so little?
Liked the looks of them. I was really shopping for any OBS and came across my truck and it was a great deal, single owner, garage kept, low miles, etc. so I couldn't pass it up. I help my buddy with his farm so when we bale round bales I use it to haul them to the barn along with delivering hay occasionally.

But really to answer you question, I don't need a dually...at all
But hey its almost free to run so I'm not complaining!

1996 F-350 CCLB dually, 4.10, 235/85R-16, ZF5, Tymar intake, Alabama Flowmaster, Isspro gauges, TS chip, Tightwad Mod
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post #8 of 26 (permalink) Old 10-19-2011, 04:12 PM
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Re: 3.73 and E4OD

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Originally Posted by mxredneck View Post
But really to answer you question, I don't need a dually...at all
Well at least you can admit it

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post #9 of 26 (permalink) Old 10-19-2011, 11:38 PM
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Re: 3.73 and E4OD

If I had to guess I would think that at least 75% of dually owners dont need one.

1995 7.3 Bronco
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post #10 of 26 (permalink) Old 10-20-2011, 03:22 AM Thread Starter
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Re: 3.73 and E4OD

^ Probably right! I am a sucker for an OBS dually with intact fenders though...

1996 F-350 CCLB dually, 4.10, 235/85R-16, ZF5, Tymar intake, Alabama Flowmaster, Isspro gauges, TS chip, Tightwad Mod
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