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Carrier swap ????

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by ftn96, Jan 27, 2001.

  1. ftn96

    ftn96 1/2 ton status

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    I finally took off the diff cover on there rear. LOL!!!! Thos spiders gears are hosed to high heaven. They have hugh amounts of pitting, not to mention the pin wobbles around in the carrier. Here's my question :

    The carrier is the stock open diff. I have an aftermarket no name brand LSD, least I cant identify it. No names or markings to help me. But it is a 10 bolt 8.5 30 spline so I know it will work. I need to know If I pull the old carrier adn install the new one with the LSD, should I have to worry about re-setting up the ring and pinion? I mean I will check the tooth pattern and all after it is installed, but it looks as though if I use the same shims that came out of it on the same sides and all that jazz it shouldn't be all that much to it, providing that the new carrier is of the exact same deminsions as the one Im pulling out.
    Somebody help me here.

    Will work for parts, beer and sex.
    90 Jimi,350/700R4/241/10bolts/3.73's/33's/4"
    <A target="_blank" HREF=http://mccordhouse.freeservers.com>http://mccordhouse.freeservers.com</A>
     
  2. Blazer_Boy

    Blazer_Boy 1/2 ton status

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    There are differences between EVERYTHING, even parts on the same line. That's why they have shims because of this differences. All you do is get some marking compund, mark the pinion with it, assemble everything give it a spin and have a look. If the marks the pinion makes on the ring gear are in the dead center you're in luck. If not get a GM service manual from the library and look at the diagrams. It has pics of marks off center and tells you what to shim.

    June 2001 - The Texas Sawz All masacre begins. Be afraid rust, be very afraid. [​IMG]
     
  3. ftn96

    ftn96 1/2 ton status

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    I've got an extra shim kit. But Ithought you were supposed to put the marking compund on the ring gear and run it back and forth and read teh indentions that the pinion makes on the marking compund!?!?

    Will work for parts, beer and sex.
    90 Jimi,350/700R4/241/10bolts/3.73's/33's/4"
    <A target="_blank" HREF=http://mccordhouse.freeservers.com>http://mccordhouse.freeservers.com</A>
     
  4. Whats up dude?You count the teeth on that thing yet?=ring gear
     
  5. ftn96

    ftn96 1/2 ton status

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    Been there done that. They are 3.42's. The ring and pinion look good, but the carrier and the spiders are well past being screwed. I will need to replace this one before the Tellico trip.

    Will work for parts, beer and sex.
    90 Jimi,350/700R4/241/10bolts/3.73's/33's/4"
    <A target="_blank" HREF=http://mccordhouse.freeservers.com>http://mccordhouse.freeservers.com</A>
     
  6. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Try this link, it has got to be the most comprehensive guide I've seen for rear ends. <A target="_blank" HREF=http://www.differentials.com/install.htm>http://www.differentials.com/install.htm</A>

    Rene

    [​IMG]
     

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