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  1. M

    replacing 12 bolt 4 series carrier with 3 series

    Just looking for a good cheap way to get 3:42 under my 2wd 84 C10. Picked up a limited slip 12 bolt out of an late 70's truck but it came with 4:10. Picked up a cheap open 3 series on eBay and was hoping to combine them and make them work. Is there any year or model of truck that I can pull an...
  2. M

    replacing 12 bolt 4 series carrier with 3 series

    Please elaborate why a gov lock is a bad idea? I'm merely curious as I have no experience in this.
  3. M

    replacing 12 bolt 4 series carrier with 3 series

    Anyone? Something please.
  4. M

    replacing 12 bolt 4 series carrier with 3 series

    I am attempting to replace a 4 series carrier with a three series carrier. The 4 series is a posi/limted slip and the 3 series is an open carrier. Is it possible to take the posi guts from the 4 and put it into the 3 series without modification? Both carriers are stock 12 bolt truck carriers. My...

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