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rear diffs

Discussion in 'The Garage' started by PsychoticDeadGuy, Jun 27, 2005.

  1. PsychoticDeadGuy

    PsychoticDeadGuy 1/2 ton status

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    ok, last week i completely blew up my rear diff in my 10 bolt. it has the 8 1/2 ring gear and 28 splines. i have been looking for a rear diff at junk yards but i couldnt find any good ones. i dont want to spend any money really because i plan on dropping these axles out as soon as i find the 1 tons i want. but my question is, will the diff out of a 75/76 monte carlo work? my buddy has one down the street and i just have to go rip it out. no cost. does anyone know if it is the 8 1/2 ring gear with 28 splines?
     
  2. PsychoticDeadGuy

    PsychoticDeadGuy 1/2 ton status

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    can anyone help me out? i need to know ASAP
     
  3. Grieby54

    Grieby54 1/2 ton status

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    I've got a dana 44 front and a 10 bolt rear with a limited slip for sale. dunno about a monte carlo
     
  4. PsychoticDeadGuy

    PsychoticDeadGuy 1/2 ton status

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    i dont really want to pay too much for 1/2 ton axles. i need some 1 tons. how much were u thinkin about the 10 bolt for though?
     
  5. dyeager535

    dyeager535 1 ton status Premium Member

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    Unfortunately I'm not up on the "older" Monte's as much as the 80's, but I'm fairly certain that will be a coil sprung axle.

    Probably a 10 bolt, but worthless to you if it's coil. Even with welding perches on it for the leafs, the width is probably different as well.
     
  6. Grieby54

    Grieby54 1/2 ton status

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    Throw me a range at what you're looking for... the limited slip makes it worth a bit more
     
  7. PsychoticDeadGuy

    PsychoticDeadGuy 1/2 ton status

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    all i needed to know is about the diff. i dont want the whole axle. i just need to take out the diff. it is a 10 bolt but are there other versions of the rear 10 bolt? i need to know if it has 28 splines and 8 1/2 ring gear?
     
  8. PsychoticDeadGuy

    PsychoticDeadGuy 1/2 ton status

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    well, you are in texas so i dont think it would be worth it.
     
  9. LongIslander26

    LongIslander26 1/2 ton status

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    Monte carlo 10 bolt

    Since it's free, and you're broke, I'd invest a little elbow grease and pull it apart and compare them.
     
  10. Grieby54

    Grieby54 1/2 ton status

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    Haha... didn't notice you were in Cali... I'm afraid with price of axel and shipping... you might as well go buy your one ton stuff...
     
  11. PsychoticDeadGuy

    PsychoticDeadGuy 1/2 ton status

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    i dont have the time either to just tear it apart it for fun...i gotta get my truck running within 5 hours.
     
  12. dyeager535

    dyeager535 1 ton status Premium Member

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    AFAIK all the 10 bolt housings are the same, at least until VERY (2000+ or so) recently.

    The two triangular projections on each lower corner of the diff will identify an 8.5" 10 bolt.

    Don't know about splines, etc., check out someplace like jegs to see what posi units fit in what cars/trucks.
     
  13. PsychoticDeadGuy

    PsychoticDeadGuy 1/2 ton status

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    ok, i just found out that it should have the same diff. now i just have to figure what the gearing is on it...thanx for everyone that replied.
     
  14. dyeager535

    dyeager535 1 ton status Premium Member

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    Don't be surprised to see 2.56 or so in it.

    Not sure how far "down" the 8.5's went, they went to 2.29 on the 7.5" in the cars.

    If you plan on grabbing it anyways, pop the cover and get the numbers off the ring gear.
     

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