1989 f150 4x4 rearend ?
02-19-2018, 09:11 PM
#2
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Location: Memphis, TN, Earth, Milky Way
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All '87-96 F150s/Broncos have the 8.8" solid axle with ABS sensor. But the early ones (like yours) have a yoke; later ones use a companion flange. Changing them correctly requires special tools & skill. Yours might also have undersize hub stickouts - when you remove the last lug nut, does the wheel fall, or is it held in-place (hubcentric)? There are also variations in gear ratio & differential type (open or limited slip). Click these & read the captions:
(phone app link)
(phone app link)
Why are you asking? Is something wrong with your truck's rear axle?
(phone app link)
(phone app link)
Why are you asking? Is something wrong with your truck's rear axle?
02-20-2018, 09:38 PM
#3
It's a 31 spline 8.8".
Any F150 or Bronco from 87 to 96 will have come with one.
Make sure the replacement has the same gear ratio as the front diff.
What steve83 said about the companion flange versus yoke for the u-joint setup applies.
You can swap yours over (yoke) if necessary but maybe get someone who knows what they're doing to do it for you - you have to adjust the nut that holds it on just right so you don't screw up the pinion bearing.
Any F150 or Bronco from 87 to 96 will have come with one.
Make sure the replacement has the same gear ratio as the front diff.
What steve83 said about the companion flange versus yoke for the u-joint setup applies.
You can swap yours over (yoke) if necessary but maybe get someone who knows what they're doing to do it for you - you have to adjust the nut that holds it on just right so you don't screw up the pinion bearing.