4.10 to 3.55? - Ford Powerstroke Diesel Forum
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Old 01-24-2013, 11:33 AM
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4.10 to 3.55?

Ive got a chance at a d60 front and 10.25 rear for cheap. The only thing is ill be going from 4.10 to 3.55 with a locker rear. Is any getting any better fuel mileage? I was hoping with higher gears and all that torque i could still run bigget tires. Any advantages or disadvantages? I want to know what you guys think about this swap. Thanks!
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Old 01-24-2013, 11:53 AM
Can you hear the derail??

 

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Better hwy economy, won't star off as torquey when loaded tho
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Old 01-24-2013, 12:13 PM
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Well its mainly a daily driver. Sometimes tow.
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Old 01-24-2013, 12:50 PM
Can you hear the derail??

 

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How much do you tow tho is the big issue
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Old 01-24-2013, 02:02 PM
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Not a lot lol. when i do its a car
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Old 01-24-2013, 02:52 PM
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I have 3.55 gears and am running 35" tires with a 5 speed tranny and have no complaints
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Old 01-24-2013, 03:02 PM
Can you hear the derail??

 

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If its just 1 car and not a huge one (limousine, CClb 4x4 pick up, or something realy large one a huge trailer) your probably not gonna notice a difference other than cruising speed/rpm difference when your going, but it should be just fine for ya
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Old 01-24-2013, 03:37 PM
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i have both and i don't like the 3.55s then again i tow alot and heavy. so?? on my 97 with 3.55s and a 5 speed at 65 i'm doing about 2000, with the 94 5 speed and 4.10s 65 is about 2300
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Old 01-24-2013, 04:00 PM
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4.10 to 3.55?

What Eric said. I had 355 a five speed and 35 inch tires. Loved the combo. And I hauled quite a bit. The most I hauled with it was four horses(1500pounds each) plus the four horse steel trailer. And hauled a 32 foot tag along camper. Never had a complaint the obs handled it great. Plus the fuel mileage was a plus


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Old 01-24-2013, 05:37 PM
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3.55's and 35" tires are a love/hate relationship.
I can pull close to 20mpg at 70mph on the flats.
I get 12mpg around town unloaded, less than 10 with a trailer. Tall gears, stop and go, and 7400lbs of truck aren't a recipe for good mileage.
I'm going back to 4.10's and 37's if it means anything.
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