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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

What gears do I have?

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Old Jan 29, 2014 | 10:41 AM
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What gears do I have?

How do I tell what my axle gearing is? I think I have 4:10s but not sure. Is there a code on the axle somewhere? Truck is the 88 F350 in my sig
 
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Old Jan 29, 2014 | 10:44 AM
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There should be a decal on the drivers door pillar with an axle code, compare that with this link. Ford Axle Code Chart .: Articles
 
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Old Feb 3, 2014 | 04:10 PM
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I looked and there is no sticker. Can somebody post a pic of one? I think Im looking in the right spot. This truck had a tough life so it wouldnt surprise me if the tag was torn off.
 
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Old Feb 3, 2014 | 04:34 PM
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Here is the calibration decal, if you can't find it then look for a small metal tag hanging off one of the rear diff cover bolts. If you can't find that then block up the rear axle(both sides), put the trans in neutral, and count driveshaft rotations for 1 wheel rotation.

 
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