gear ratios
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New User
Joined: Oct 2003
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gear ratios
does anyone know if i can run a dana44 3.50 gears in the front and a ford 9" with 3.55 gears in the rear, will it mess anything up???
i have a 1980 bronco with a 351w 4X4
i have a 1980 bronco with a 351w 4X4
Last edited by BRONCOMAN_1980; Oct 10, 2003 at 10:27 PM.
Post Fiend
Joined: Mar 2002
Posts: 19,402
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From: Bonita Springs FL
You're a little backwards. The 9" is available with 3.50 gears, and the Dana 44 with 3.54.
That being said, it is within acceptable tolerances. To be safe, I wouldn't drive it much in 4x4 on dry pavement.
That being said, it is within acceptable tolerances. To be safe, I wouldn't drive it much in 4x4 on dry pavement.
Postmaster
Joined: Jul 2003
Posts: 2,711
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From: Pittsburgh
As a rule of thumb keep the difference between gears to 2% or less. to figure this: divide the smaller gear by the larger gear, multiply that number by 100, and then subtract it from 100.
3.50/3.55=.98591
.98591*100=98.591
100-98.591=1.409% difference. . .
you'll be fine
3.50/3.55=.98591
.98591*100=98.591
100-98.591=1.409% difference. . .
you'll be fine
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from what i can read on the tags the rear has 3.50's and the front has 3.50's but i blew the rearend out and someone will sell me a rearend with 3.55's for $50, i just didn't know if it would hurt anything
