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Is this a limited slip diff. in my 14 bolt?

Discussion in 'The Garage' started by Zooman, Mar 21, 2007.

  1. Zooman

    Zooman Registered Member

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    Hey guys I am changing the diff fluids in my diffs and I want to see what if I have a limited slip in my 14 bolt before I add the gear oil. Just in case I need to add that special additive in the oil.
    Here is a pic. Can you tell me for sure what it is. My truck is a 78 Chevy 4x4 3/4 ton. My rear axle is a ff 14 bolt.
    Thanks guys
    Matt

    [​IMG]

    [​IMG]
     
  2. sweetk30

    sweetk30 professional hooker Premium Member

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    if you were a member i would link you to the 14ff id helpers gide with pics. but you are not. so i will tell ya. yes its a gov-lock rear end. or comon name of gov-bom as the stock ones in the smaller axles blow up real easy. the 14ff is the strongest of them all. i love mine in my daily driver truck. use to be in my mud truck and worked good also with 38 swampers and built 400 sbc. if you know how to use them thay can last good for what thay are.

    ah heck here ya go if it works for ya. http://coloradok5.com/forums/showthread.php?t=151608
     
  3. Zooman

    Zooman Registered Member

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    Perfect

    Thanks for the help.
    I tried a search yesterday before I put the cover back on but I had only searched for pics of a limited slip.
    I appreciate the link but it's not working.
    I just did another search for gov-loc and just read a ton of posts. I never thought to count the pins on the dif but it looks like I have three. So thanks for letting me know what I have.
    Matt
     
  4. K-5 Bomber

    K-5 Bomber 1/2 ton status

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    Save me some time, Zooman. What's the Gov-Loc look like & how do you ID one? Thanks for throwin' a lazy brother a bone ;)
     
  5. divorced

    divorced 3/4 ton status

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    Check out the pic below...

    Look for the pins that come through the differential (red arrow).

    Count the number of ring gear bolts between two of the pins (blue arrow).



    If there are 3 ring gear bolts between two pins, it is an open differential.

    If there are 4 ring gear bolts between two pins, it is a GovLock.



    In the picture below there are 4 bolt between two adjacent pins, indicating a GovLock.



    [​IMG]
     
  6. Zooman

    Zooman Registered Member

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    Perfect info!

    Thanks for posting that response Divorced.
    I don't have any doubts that I have a gov-loc. I haven't had a chance to wheel this truck at all so I am not sure it the gov-loc works. I hope so.
    Thanks guys.:saweet:
    Matt
     
  7. K-5 Bomber

    K-5 Bomber 1/2 ton status

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    Awesome! Thanks.
     
  8. DEMON44

    DEMON44 Low-Tech Redneck

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    that red arrow points to the end of a spider pinion............a govlock has 3.......an open has 4.

    Thats why you can't put a detroit in a govlock carrier. the carriers are not the same.
     

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