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How much bigger is a 14FF housing than a 12-bolt? (axle tube not diff)

Discussion in 'The Garage' started by Topdown, Apr 14, 2003.

  1. Topdown

    Topdown 1/2 ton status

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    Ok... I dont have my 14FF yet, but it will be here in a few weeks.

    So, those of you with 14FF's, did you notice any "lift" difference after installing the 14FF? I mean, if the axle housing is 1" "taller" from center than the 12-bolt wouldnt that equate to your tire sitting 1" lower in your wheel well? (essentially a lift of sorts)

    Just trying to figure out what to expect and if I am going to need to "lift" the front (D44) a little (1/2 inch or so) to compensate for the bigger rear axle housing.

    Thanks
    -Ryan /forums/images/graemlins/k5.gif
     
  2. balzackks84

    balzackks84 1/2 ton status GMOTM Winner

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    It does lift it a little. I don't know if you looked at mine at the pizza place but it used to sit level now the rear is about 1-1.5" higher than before. Most definately noticeable but not too horribly raked.
     
  3. DwarF

    DwarF 1/2 ton status

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    I thought the 12 bolt was 3" diameter? My 14bolt is 3.5", which would equate to a half inch in both directions from the center. I doubt you would notice.
     
  4. SUBFAN

    SUBFAN 1/2 ton status

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    that would be a 1/4 inch top and bottom....
     
  5. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Actually, the tubes are 3 3/8" diameter. /forums/images/graemlins/wink.gif /forums/images/graemlins/thumb.gif
     
  6. Beast388

    Beast388 1/2 ton status

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    Yep, Wes is correct(of course) the 14BFF is 3-3/8" diameter and the 12 bolt is 3" diameter, netting about 3/16" lift from the tube diameter. You probably won't be able to notice 3/16" but you might if you have a calibrated eye. /forums/images/graemlins/rotfl.gif /forums/images/graemlins/thumb.gif
     
  7. Hossbaby50

    Hossbaby50 3/4 ton status

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    I did get a little lift out of my 14bff when it replaced the 10 bolt. I got the little lift off the axle tube being bigger, but I think I also netted some off the spring perched being taller too. I don't think I got a full inch, but I would say between 1/2-1" total. My buddy who helped me install it both noticed the little extra raise.
     
  8. Topdown

    Topdown 1/2 ton status

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    Thanks everyone!

    -Ryan
     

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