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Old 02-14-2011, 10:55 PM   #1
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Default Speedometer Calibration on 1997 F150

Hi I am doing a gear swap from 3.08 to 3.73 gears in my 1997 F150 4.6 4X4. I know the speedometer isnt electronic and I cant change it with a programmer. I heard it was cable driven and there is a gear in the transfer case. Is this true, and if not how do I change it.
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Old 02-15-2011, 12:42 AM   #2
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http://www.transmissioncenter.net/sp...n_______va.htm

Scroll down to # 82.
The Vss gear is on the drivers side of your trans toward the mid/rear, a bracket with a 10mm bolt holds it in place, unbolt and pull out being careful to not damage the O ring. Count the teeth on your gear and multiply by 1.2 to get a closer gear count.
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Old 02-17-2011, 11:04 PM   #3
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Thanks!
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Old 03-03-2012, 02:09 PM   #4
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I know this is an old thread, but I thought I'd add to your thread(just in case someone does a search like I did) that if someone were to order a vss gear on fordparts.com you can pick it up at your local dealer with no shipping fees. I just paid $4.04 for an 18 tooth gear part # C7SZ-17271-C for an auto tranny. Took 5 min to change with 7/16 wrench and needle nose pliers. My truck has a 3.55 with 285/75/16's. My door says original tires were 235's.
Here are part numbers:
16 Blue D0AZ-17271-A
17 Green C7SZ-17271-A
18 Gray C7SZ-17271-C
19 Tan C7VY-17271-A
20 Orange C8SZ-17271-B
21 Purple D0OZ-17271-B
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Old 03-03-2012, 02:15 PM   #5
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^^
Nice! thanks for the post!
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Old 05-17-2014, 11:40 PM   #6
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Quote:
Originally Posted by hunter19707 View Post
I know this is an old thread, but I thought I'd add to your thread(just in case someone does a search like I did) that if someone were to order a vss gear on fordparts.com you can pick it up at your local dealer with no shipping fees. I just paid $4.04 for an 18 tooth gear part # C7SZ-17271-C for an auto tranny. Took 5 min to change with 7/16 wrench and needle nose pliers. My truck has a 3.55 with 285/75/16's. My door says original tires were 235's.
Here are part numbers:
16 Blue D0AZ-17271-A
17 Green C7SZ-17271-A
18 Gray C7SZ-17271-C
19 Tan C7VY-17271-A
20 Orange C8SZ-17271-B
21 Purple D0OZ-17271-B
I just recently changed tires on my 98 from 235s with 16s to 265 with 17s could someone tell me which one of these gears i need i'm so lost. I also have 3.55s.
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Old 05-17-2014, 11:51 PM   #7
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Need to know how many teeth are on the factory VSS gear first..
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Old 05-18-2014, 12:00 AM   #8
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Quote:
Originally Posted by Carcrazygts2 View Post
Need to know how many teeth are on the factory VSS gear first..
Okay I will have to pull it and count them. Thank you for your response.
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Old 05-18-2014, 12:00 AM
 
 
 
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