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Old December 28th, 2009, 06:18 PM   #1
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Default are front and rear gears the same in an axle?

I keep hearing that the front axle gears are a tooth different from the rear. is this true? so right now I have 3.55's in my truck. my rearend went out and I have a rear axle with 3.54's. will it be ok to run the rear axle with 3.54's and the 3.55 fronts?
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Old December 28th, 2009, 06:22 PM   #2
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no noticeable difference. the difference between 3:54 and 3:55 usually when someone (i.e. the seller, gear manufacturer, etc.) rounds up or down. number of teeth on pinion/ number of teeth on ring gear=gear ratio.
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Old December 28th, 2009, 06:29 PM   #3
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All right, I heard this long ago. Maybe bullshit. When we bought a bunch of power wagon from white sands. They had 4.09/4.10. I was told they run one higher in the front to handle better in snow and sand. i.e. the front is always pulling more than the rear.

Thats what the old codger said
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Old December 28th, 2009, 06:32 PM   #4
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Fords run slightly different gears front and rear from what I've seen. Fact is as long as the front and rear are within 1% of each other its ok.
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Old December 28th, 2009, 06:38 PM   #5
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All right, I heard this long ago. Maybe bullshit. When we bought a bunch of power wagon from white sands. They had 4.09/4.10. I was told they run one higher in the front to handle better in snow and sand. i.e. the front is always pulling more than the rear.

Thats what the old codger said
Exactly what I was told too. Like you, it was an old dude who told me that.
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Old December 28th, 2009, 06:45 PM   #6
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Quote:
Originally Posted by XXXJ View Post
All right, I heard this long ago. Maybe bullshit. When we bought a bunch of power wagon from white sands. They had 4.09/4.10. I was told they run one higher in the front to handle better in snow and sand. i.e. the front is always pulling more than the rear.

Thats what the old codger said
I heard the same thing to. So I should be ok to run 3.55 in the front and 3.54 in the rear, and will it be ok when I hit pavement?
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Old December 28th, 2009, 06:45 PM   #7
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Exactly what I was told too. Like you, it was an old dude who told me that.
fuckin old dudes.
They know everything.
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Old December 28th, 2009, 06:46 PM   #8
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fuckin old dudes.
They know everything.
Yep. He said it was so the front was pulling the rear a bit.
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Old December 28th, 2009, 06:47 PM   #9
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I heard the same thing to. So I should be ok to run 3.55 in the front and 3.54 in the rear, and will it be ok when I hit pavement?
yes
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Old December 28th, 2009, 06:53 PM   #10
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3.54 front/3.55 rear for it to pull. so the fronts turn more than the rear for steering.

the other way the rear will be pushing.
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Old December 28th, 2009, 06:59 PM   #11
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3.54 front/3.55 rear for it to pull. so the fronts turn more than the rear for steering.

the other way the rear will be pushing.
Thats what I thought. So I guess I'm screwd. I'll have to pay the high dollar to make it right.
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Old December 28th, 2009, 07:01 PM   #12
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you will be ok with it. nothing different from other trucks. if you spend the big bucks to make it right you will end up with the same thing.
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Old December 28th, 2009, 07:03 PM   #13
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x2 it may be that way from the factory but if you have the parts use them.
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Old December 28th, 2009, 07:06 PM   #14
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Well I guess I know what I'm doing the rest of the week.
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