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14 bolt bolt up?

Discussion in 'The Garage' started by nicotine, Jan 15, 2004.

  1. nicotine

    nicotine 1/2 ton status

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    this is probbly a stupid question but a buddy of mine can get a smoking deal a 14 bolt ff but it is out of a 70's chevy van and has some wiered gear ratio like 3:27 i think. the question is will this 14 bolt replace his 10 and just bolt right up? /forums/images/graemlins/ears.gif
     
  2. big83chevy4x4

    big83chevy4x4 3/4 ton status

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    out of a van, no. he will need to grind off the old ones and weld new ones on. the van is more desirable because it is very close, if not the same width as the front. he will also need a different pinion yoke or a conversion ujoint for the drive shaft to bolt up. you will also need to regear it to match the front.
     
  3. nicotine

    nicotine 1/2 ton status

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    grind off the old what?
     
  4. mechted

    mechted 1 ton status Premium Member

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    spring perches, and maybe shock mounts
     
  5. big83chevy4x4

    big83chevy4x4 3/4 ton status

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    sorry my mind was thinking faster than i can type. /forums/images/graemlins/eek.gif

    he will have to grind off the old spring perches.
     
  6. nicotine

    nicotine 1/2 ton status

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    what would he have to replace in thier place or what angle?
     
  7. big83chevy4x4

    big83chevy4x4 3/4 ton status

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    there are a couple of people on here that make the spring perches. it would be best to mock up the suspention and point the pinion directly at the t case output and tack them in place then take the axle out and weld them in. or he could just weld them in at the same angle as the old ones and just use shims
     
  8. kennyw

    kennyw N9PHW Premium Member

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    [ QUOTE ]
    there are a couple of people on here that make the spring perches. it would be best to mock up the suspention and point the pinion directly at the t case output and tack them in place then take the axle out and weld them in. or he could just weld them in at the same angle as the old ones and just use shims

    [/ QUOTE ]

    He would only need to point the pinion at the Tcase if he is running a CV style rear driveshaft. If he is running the stock drive line welding them in the same angle he cut them off from would be correct.
     
  9. R72K5

    R72K5 Banned

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    should be 3:21 if it is 3:20-anything, weld the perches to the van axle the same way that they are welded to your original axle under your rig now so that it points the same way, unless your truck is really super lifted in which then you would want to tip the pinion of the axle up a little more

    3:27 ratio wa sin the borg warner 9 bolt axles in the third gen camaros and firebirds, those axles not available until 85-up, some ppl like to call them the australian axle
     

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