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Drive & Driven gears for speedometer

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Old Mar 31, 2013 | 10:12 PM
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granny_rocket's Avatar
granny_rocket
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Drive & Driven gears for speedometer

Anyone have experience swapping out drive/driven gears on an '84 f-150 with c6 transmission. I recently had to swap out my stock 3.55 rear axl with a craigslist found 3.08 rear. The previous owner put oversize tires on the truck so the speedo was off before the swap and now it's about 10 mph off. I would like to right this so I don't have to keep guessing or using my GPS to tell what my speed is.

Thanks.
 
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Old Apr 1, 2013 | 04:44 AM
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EPNCSU2006
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Maybe this will help: Ford Bronco Speedo Gearing
 
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Old Apr 1, 2013 | 10:10 AM
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Drive gears are cut into the output shaft and the only way is to change shafts.

Driven gears are available.

But there is one model of C6 that has a removeable gear. It has a very short extension and bolt on flange.
 
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