having a confusing moment
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Junior User
Joined: Jan 2011
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having a confusing moment
trying to figure out speedometer gears... running a c6 with 3.55 gears, 28 inch tire. how do i figure this out and do i just change the gear thats on the speedo cable or do i have to pull apart the trans to change both of them? 
Postmaster
Joined: Mar 2008
Posts: 2,703
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From: Des Moines, Iowa
use the calculator to figure the number of teeth you need on the speedo gear...
Ford Bronco Speedo Gearing
Ford Bronco Speedo Gearing
FTE Legend
Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
It helps a LOT to know what driven gear is on the end of the speedo cable now and also what way your final drive combo changed.. more or less gears, bigger or smaller tires from the stock combo.
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Junior User
Joined: Jan 2011
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so theres more to it? how would i figure out how much its out? the gear you guys are talking about is the one that goes into the transmission on the end of the speedo cable right? i have to count the teeth on that one? but im changing transmissions so what if the internal one has a different tooth count?
i ain't rite
Joined: Mar 2005
Posts: 65,422
Likes: 5,506
From: Marlboro Mental Hospital.
nope, nothing to it.
before you put the cable in the new trans, count the teeth on the speedo cable gear.
after you get the new trans in, use a gps unit to figure out how far off the speedo is, then let us know what gear you have and how far off the speedo is. we will then be able to tell you the proper tooth count for the gear you need .
before you put the cable in the new trans, count the teeth on the speedo cable gear.
after you get the new trans in, use a gps unit to figure out how far off the speedo is, then let us know what gear you have and how far off the speedo is. we will then be able to tell you the proper tooth count for the gear you need .
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