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rear end gears

1K views 6 replies 4 participants last post by  strokingkid1392 
#1 ·
how do you tell what gears r in your rear end?
 
#3 ·
Assuming the truck is still running the stock gears you could look at the axle code on the door sticker & do a Google search for Ford axle codes to decode it. Another way is there is a tag on one of the rear diff. cover bolts that will have the info on it. The hardest way is to count driveshaft rev. / one tire rev ( both tires need to rotate at the same time ). The final way is to pull the cover & look for the tooth count stamped into the side of the ring gear or physically count the ring & pinion teeth.
 
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