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Gear Ratio Difference???

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Old Feb 2, 2002 | 10:23 AM
  #1  
6772crewcabs's Avatar
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Gear Ratio Difference???

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can a 4x4 truck have a 4.1 ratio rear and a 4.11 ratio rear???
I see both ratio's listed in the manual...Could i use
one of each or do they both need to be 4.1 or 4.11
together???
Just found a 4.1 ratio dana 60 rear for $50

 
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Old Feb 2, 2002 | 12:32 PM
  #2  
ummduh's Avatar
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Gear Ratio Difference???

Yea, sometimes you can't get the ratios exact. a .01 difference isn't going to hurt anything, as long as it's part time, and only used off pavement.
 
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Old Feb 2, 2002 | 12:38 PM
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Gear Ratio Difference???


You wrote > 4.1 rear and 4.11 rear.

Did you actually mean Front & Rear?

If so,I think it is normal for both gears to be the same.


Dennis



Please Don't Ask Me Any Tough Questions As:
"I'm Saving My Memory For When I Develop Alzheimer's"


78 F-150 429CJ,Silver
w/Explorer Pkge.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
68-Mustang 289-Sunlit Gold 80,892Mi
78-Buick LeSabre 403 4V
84 Volvo DL Wagon
 
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Old Feb 2, 2002 | 01:40 PM
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Gear Ratio Difference???

What i'm trying to find out is,
ford has both listed for gear ratios for the trucks, a 4.1 ratio
and a 4.11 ratio, I have a 4.10 ratio or 4.11 in the front of my truck
and found this full floater with 4.1 ratio code 24 for 1970
pickup....I just want to know if i can use them together
for my truck??Or should i find a true 4.11 rear to match the
front...
 
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Old Feb 2, 2002 | 01:52 PM
  #5  
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Gear Ratio Difference???

[updated:LAST EDITED ON 02-Feb-02 AT 03:06 PM (EST)]My listings show the 4.11:1 was in a Ford 9" Ltd. Slip,
and the 4.10 is in the Dana rears.


Dennis



Please Don't Ask Me Any Tough Questions As:
"I'm Saving My Memory For When I Develop Alzheimer's"


78 F-150 429CJ,Silver
w/Explorer Pkge.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
68-Mustang 289-Sunlit Gold 80,892Mi
78-Buick LeSabre 403 4V
84 Volvo DL Wagon
 
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Old Feb 2, 2002 | 01:56 PM
  #6  
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Gear Ratio Difference???

If you have a dana 44 front the gear ratio will be 4.09.
 
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Old Feb 2, 2002 | 07:15 PM
  #7  
6772crewcabs's Avatar
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Gear Ratio Difference???

The reason I ask all this is my 69 crewcab
i am switching the front axle to a 1976 dana 44 with dics, and
i see in 76 they only list 4.11 as a ratio in the ford red book,
now the dana 60 for the back i found is from a 1970 f-250 and the
code lists it as a 4.1 ratio i'll assume thats 4.10???is this
in range to work or will i need to find a 4.11 rear to match
the front???

 
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Old Feb 4, 2002 | 03:10 PM
  #8  
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Gear Ratio Difference???

you'll be fine with a 4.11 front and a 4.10 rear. i'm not a 4x4 expert, but have read that it's got something to do with keeping the system under a little bit of load while in four wheel drive.
 
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Old Feb 5, 2002 | 01:35 AM
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Gear Ratio Difference???

You will not have any problems with running a 4.10 with a 4.11 or even a 4.09( though that is bout the limit.) The tires you have bought for your truck are farther off ratio than that. No matter what kind of tires you buy it will be that way. Hope this helps.

Scott
 
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Old Feb 5, 2002 | 02:39 PM
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Gear Ratio Difference???

True. That little bit of a difference shouldn't matter. Many-a-truck has come with slightly different ratios between front and back axles straight from the factory.
 
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Old Feb 5, 2002 | 02:53 PM
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Gear Ratio Difference???

 
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