Question about a F-150

Discussion in 'Other Automotive Tech & Talk' started by Tim Wilmoth, Feb 13, 2012.

  1. Tim Wilmoth

    Tim Wilmoth Member

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    To any mechanics out here. Will a rearend from a 1977 F-150 fit in a 1986 F-150? Thanks for any help I get
    Tim Wilmoth
     
    Tim Wilmoth, Feb 13, 2012
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  2. Fordmaster169

    Fordmaster169 Member

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    I don't think the spring perches are in the same place. The 86 perches are wider than the 77 I believe. Other than the fact that the 77 is a 9" and the 86 is a 8.8". You could make it work with a little effort.
     
    Fordmaster169, Feb 13, 2012
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  3. dkstuck

    dkstuck Member

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    Are you changing out due to pinion loosing up?
    If early enough, just torque it back up.
     
    dkstuck, Feb 13, 2012
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  4. Derek 5oComet

    Derek 5oComet Tire burner

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    Rear ends are interchangeable put a 8.8 out of a 1991 F150 in my 79 when i was in a pinch.No problem.
     
    Derek 5oComet, Feb 13, 2012
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  5. Tim Wilmoth

    Tim Wilmoth Member

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    bad housing

    Im changing it out because the guy I bought it from has put seals and bearings on it twice and it still leaks so it has to be in the rearend housing itself.
     
    Tim Wilmoth, Feb 13, 2012
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  6. fordman57

    fordman57 Member

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    If its a 8.8 the axles are worn, Just get set of axles. They also make
    a offset bearing works some times.
     
    fordman57, Feb 13, 2012
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  7. Bryant

    Bryant forgot more than learned

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    where is it leaking at?
    if its from the yoke you can just replace the yoke. also it can leak through the splines. i will always put sealant on the splines to prevent that. i really doubt that the housing is the problem with the leak. i would say the odds are the previous owner didnt know what they were doing.
     
    Bryant, Feb 13, 2012
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  8. RMiller

    RMiller My name is Rick

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    I tried those in a passenger car 12 bolt that was in my GTO, it was a bandaid at best and didn't last. It moved the seal too close to the unmachined part of the axle and with the amount of movement you have with c-clip axles it took the seal out in short order.
     
    RMiller, Feb 14, 2012
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