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Is it a Gov Lock or what?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by blazen91, Dec 1, 2000.

  1. blazen91

    blazen91 1/2 ton status

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    I have my 10b diff cover off and it looks different than any other diff I've ever seen. It has two pins with some kind of peice of metal and a spring. I know that's not a good discription, but I don't know how to explain it. Is there somewhere I can see a pic of one?TIA

    blazen91
    Protect the land FOR the people
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  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    If it looks like a cross between a cuckoo clock and a diff then its a gov-lock. Thats about the only way I know how to descibe it!
    It does sound like a gov-lock to me though.

    Rene

    [​IMG]
     
  3. blazen91

    blazen91 1/2 ton status

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    Well....not the way I would explain it, but that's about what it looks like!! Do I need to use any special oil or anything? Is this a good diff to have(aside from the fact it's in a 10b. I know how we all feel about those)?

    blazen91
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  4. HarryH3

    HarryH3 1 ton status Author

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    The metal springs make it sound like an aftermarket limited slip. The Gov-Loc has a large gear parallel to the ring gear that has very tiny teeth and looks like it has no business being near all those beefy parts. Like tRustyK5 said, it'll look like cuckoo clock parts have been stuffed into your diff. [​IMG]

    I think you can find pictures at http://www.reiderracing.com, though their site seems to be down right now.

    <font color=black>HarryH3 - '75 K5</font color=black>
    http://ThunderTruck.ColoradoK5.com
     
  5. blazen91

    blazen91 1/2 ton status

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    Yes that is the one. I forgot to mention the little gear. The srings are are like small light srings, not like the ones in my Nissan's limited slip which look like valve springs or something. Thank you both for your help. What about the oil?

    blazen91
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  6. HarryH3

    HarryH3 1 ton status Author

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    Most brand name gear oils are compatible with limited slip differentials. Just read the label before you buy. It will say if it's OK for use with limited slip.

    <font color=black>HarryH3 - '75 K5</font color=black>
    http://ThunderTruck.ColoradoK5.com
     
  7. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Its better than an open diff, but if you get all flexed out it more than likely will send power to the tire with the least traction, at least that was my experience with them. Eaton claims that they are a true locker but they are the only ones that seem to think so. As for oil I don't beleive the gov-lock requires anything special, I'm sure someone will correct me if I'm wrong.

    Rene

    [​IMG]
     
  8. blazen91

    blazen91 1/2 ton status

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    OK it's a gov lock. But now I just counted my ring and pinion and I have 3.07's where I thought I had 3.73's. No wonder my truck is gut less! Hay Moose, do you sell gear sets?

    blazen91
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  9. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    I thought your glove box code was for 3.73's? Maybe someone swapped glove boxes [​IMG].

    Rene (feeling your pain right now)[​IMG]


    [​IMG]
     
  10. blazen91

    blazen91 1/2 ton status

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    I never checked the codes, because I didn't know what they where. I was just guessing! OOOOOPPS!! I plan on going to 35's and the 14ff I'm getting has that in it now. Do you think that will good or should I go to 4.11. Just looking for your opinion.:)

    blazen91
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  11. blazen91

    blazen91 1/2 ton status

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    I never checked the codes, because I didn't know what they where. I was just guessing! OOOOOPPS!! I guess now would be a good time to ask Santa for some 4.56's and 35's.

    blazen91
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  12. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    I have 35's and 3.73's, I like it just fine. Then again I have a 4 speed manual so I don't have to worry about my tranny. If you have the 700R4 you might wanna go deeper than 3.73 and run a big cooler. Just my opinion, and you know what they say about opinions[​IMG]

    Rene

    [​IMG]
     
  13. blazen91

    blazen91 1/2 ton status

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    I have 33's with a 700r4.I have a 28,000 lb. cooler from Summit, so tranny heat isn't an issue.

    blazen91
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