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12 bolt carrir differencs

Discussion in 'The Garage' started by weisel, Jan 31, 2003.

  1. weisel

    weisel 1/2 ton status

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    I blew up my carrier on my 12 bolt and want to find another. What are the differences in carriers they put in these axles? Large for 3.73 and up? Small for 3.73 and down? 3-Series, 4-Series? What dose this mean. Can someone take this bag of snakes and lay them strait for me. I need to find one so I can instal new gears, bearings, and such to get my truck up and running again. I miss her so much!
     
  2. Shaggy

    Shaggy 3/4 ton status

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    <font color="green"> 3 series is for 3.73 and lower numerically. 4 series is for 3.92 and numerically higher. </font color>
     
  3. u2slow

    u2slow 1/2 ton status

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    A truck 12-bolt has three different cases, called 2, 3 and 4-series respectively. These are the ratio splits:
    2.56-2.73
    2.76-3.40
    3.73-4.11
     
  4. u2slow

    u2slow 1/2 ton status

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    </font><blockquote><font class="small">In reply to:</font><hr />
    3 series is for 3.73 and lower numerically. 4 series is for 3.92 and numerically higher.

    [/ QUOTE ]

    These are the Dana 44 carrier splits! /forums/images/graemlins/wink.gif
     
  5. azheep

    azheep Registered Member

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    my 12b pinion bearing went last year. loss of oil. I went from 3.08 to 3.73. I had to get a diff carrier. /forums/images/graemlins/wink.gif
     
  6. weisel

    weisel 1/2 ton status

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    So, I need a series 4 in order to instal 3.73s. Too bad, I bought a whole 12 bolt with 2.80 gears and now I can't even use the carrier. I only paid gas money to go get it so no big deal. How can you tell which carrier is which, if it dons't have the ring gear on it (with the teeth count stamp)?
     
  7. weisel

    weisel 1/2 ton status

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  8. Shaggy

    Shaggy 3/4 ton status

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    </font><blockquote><font class="small">In reply to:</font><hr />
    These are the Dana 44 carrier splits!

    [/ QUOTE ]

    <font color="green"> I gotta stop replying to questions about half ton stuff, I have apparantly purged that info from my brain. I swear I used to know it... /forums/images/graemlins/crazy.gif /forums/images/graemlins/tongue.gif </font color>
     

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