differential change

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11-12-2005, 01:28 AM

new guy

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differential change

I have just changed the differential on my 98 f150 from a 308 to a 373 and my speedometer is way out of whack what is my next step?

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11-12-2005, 11:49 AM

bremen242

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Not sure about the '98s, I know my '00, they just reprogrammed the dash. I think the '98s are the same, if not, you will have to change the speedo gear..

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11-12-2005, 01:57 PM

BLK94F150

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You have to get a new speedo gear for the 97s and 98s. The 99+s have the all electronic dash that can be programmed.

Mike

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11-15-2005, 01:47 AM

Fasterhorses

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This is another possibility
http://www.bluegauges.com/prod_yellow_box.htm

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11-16-2005, 04:05 PM

krunker

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I got a gear off of steeda.com that fit my 97.

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01-24-2006, 11:16 PM

mrsteveo19761982

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If you have an automatic you can change the gear, if you have a stick you will have mag pickup type sensor and you will have to reprogram the computer.

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