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10 bolt carrier question?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 88sub4x4, Oct 28, 2002.

  1. 88sub4x4

    88sub4x4 1/2 ton status

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    I rebuilt my blown 10 bolt rear axle about a year ago. I put in an Eaton limited slip carrier as my old one was cracked. My current ratio is 2.42 I am putting a 14 SF in the rear with a 4.10 ratio. My question is can I put the limited slip carrier from the 10 bolt rear diff. in the 10 bolt front diff. with a 4.10 ring and pinion? I have heard that the carrier would be too small. The current ring gear is 8.5" i believe. Any help is appreciated. /forums/images/graemlins/burb.gif
     
  2. Shaggy

    Shaggy 3/4 ton status

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    <font color="green"> Don't see why you couldn't, but you'll need the thick style 4.10s to fit on that carrier. </font color>
     
  3. JIM88K5

    JIM88K5 1/2 ton status

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    No go. If I'm not mistaken, a 14bsf has a 9.50 ring gear.
    Jim
    /forums/images/graemlins/usaflag.gif
     
  4. Shaggy

    Shaggy 3/4 ton status

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    <font color="green"> I think he's asking about taking a carrier from a rear 10 bolt and putting it in a front 10 bolt. </font color>
     
  5. rogerwilco71

    rogerwilco71 1/2 ton status

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    </font><blockquote><font class="small">In reply to:</font><hr />
    No go. If I'm not mistaken, a 14bsf has a 9.50 ring gear

    [/ QUOTE ]
    I believe he meant the rear carrier from the old 10 bolt to the front 10 bolt with new 4.10 gears. BTW...I'm not sure
     
  6. rogerwilco71

    rogerwilco71 1/2 ton status

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    Shaggy's a fast typer /forums/images/graemlins/rotfl.gif
     
  7. Shaggy

    Shaggy 3/4 ton status

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    <font color="green"> That's what happens when your fat ass is parked at a desk behind a computer all day long. /forums/images/graemlins/eek.gif </font color>
     
  8. u2slow

    u2slow 1/2 ton status

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    I believe the split on the 10-bolt is 2.56-down/2.73-up.

    Shouldn't be too much trouble to find used 4.10 gears w/case. Don't pay extra for thick gears for the case you have. Save your $$$ for a spool /forums/images/graemlins/grin.gif
     
  9. JIM88K5

    JIM88K5 1/2 ton status

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    Ok I'll go back to sleep... /forums/images/graemlins/ignore.gif
    Jim
     
  10. 88sub4x4

    88sub4x4 1/2 ton status

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    What are "thick gears"? I have never heard of this before. The front axle that matched the 14b sf i have was $500 cause the brakes were all new so thats why i didn't get it. Haven't been able to find another one thats why I'm going to put a ring and pinion in my current axle. /forums/images/graemlins/burb.gif
     
  11. Blue85

    Blue85 Troll Premium Member

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    First of all, 2.42 in a truck?! /forums/images/graemlins/shocked.gif That's awful. Maybe you should double check. I've never heard of it. Even 2.73 is rare for trucks. 2.42 is a car ratio.

    The thick gear is needed because a low-number gearset has a huge fat pinion gear. There are almost half as many teeth on the pinion as there are on the ring. When you go to a large-number gear, the pinion is so much smaller that the ring is a hundred miles away. There is also such a thing as a ring gear spacer. Don't know if they are a good idea or not.

    A rear 10-bolt carrier does fit in a front 10-bolt. Everything inside the differentials is the same. The only difference is that there are no C-clips in the front, since they are not needed. There is room for them, of course, though.

    The one thing you should look out for is that all 10-bolts front and rear were 28-spline up to sometime in the late 80's when a 30-spline rear showed up. If your rear was 30-spline, you would have to switch to 30-spline front axle shafts to use that diff in the front.

    The carrier break is at 2.73
     
  12. imiceman44

    imiceman44 1 ton status

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    I think someone here is replacing the 3 with a 2.
    The numbers I know are 3.42 (and it is a very common number in 80' models ) and the carrier break number is 3.73, at least that is what all adds in my magazines say.
     
  13. u2slow

    u2slow 1/2 ton status

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    Each axle has its own unique carrier breaks. 10-bolts are not all the same! There's a 7.5" 7.625", 8.2", 8.5", 8.6", and of course all the Dana axles. Here's a link with most of the popular ones:

    Carrier breaks
     

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