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will semi-floating 14 live through 39's?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by steve_97, Mar 10, 2002.

  1. steve_97

    steve_97 Registered Member

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    will semi-floating 14 live through 39\'s?

    I have a semi-floating 14 in my chevy, I am upgrading to 39's and need to know if it will survive. I have ran 14B FF's in everything else but I really want to keep my wheels(aluminum). Is it possible to modify the 14B FF to fit 6 lug wheels? I dont want to get too involved in this, but I know the hub size will probably limit my options. Any help would be appreciated. Just dont wanna put disc brakes, 4.88's and a locker in the semi if it will explode during street or mild offroad use. Also is anyone using warn hub fuses in a dana 44?
    Steve
    Steve_97@hotmail.com
     
  2. RedDwarf

    RedDwarf 1/2 ton status

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    Re: will semi-floating 14 live through 39\'s?

    You didn't say what kind of motor you've got, but if you're not cranking 400HP the SF will probably live for a long time.

    I have seen one destroyed with a set of 38.5 Boggers, but then the guy was a real Budweiser Throttle Jockey...

    Yes, the FF can be converted to 6 lug. If you do a search, you will probably find something about it, or check on Pirate4x4. I remember seeing something there.
    There is also a company that makes 6 lug semi floating conversion of the 10.5" Full Floater. It's about 3 grand I think...
     
  3. riz

    riz 3/4 ton status

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    Re: will semi-floating 14 live through 39\'s?

    <font color=blue>What gears are in your SF ? I'd buy it from you if it was something you didin't want anymore. I need the strength and the 6 lug pattern. Let me know.
     
  4. BLUESMAN

    BLUESMAN 1/2 ton status

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    Re: will semi-floating 14 live through 39\'s?

    I'm running 15.50/38's on my 14 bolt SF with no problems.
     
  5. Highlander

    Highlander 1/2 ton status

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    Re: will semi-floating 14 live through 39\'s?

    First off Steve Fill out your profile.
    Well like Reddwarf said if your not running alot of Horse power
    you should be fine.

    Eric
     
  6. ChadH82

    ChadH82 1/2 ton status

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    Re: will semi-floating 14 live through 39\'s?

    ORU makes a conversions but it's way spendy. Donovan on this board can do it but you have to send him your hubs. I'm running 38's and a 14SF with LS but my foot's not too heavy.
     
  7. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Re: will semi-floating 14 live through 39\'s?

    I think it'd probably hold up, but I wouldn't want to run a tire over 38s on a semi floating axle. If the shaft brakes you lose your tire. That's not too safe.

    I have the SF myself but I don't think I'd run tires that big on it. My friend ran 44s on a 12 bolt rear for a few months without problems though. Just be careful.

    The 14 SF shafts are pretty strong though.
     
  8. Twiz

    Twiz 1/2 ton status

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    Re: will semi-floating 14 live through 39\'s?

    Yours should be something close to this:


    Houseing:
    - 65.5" from flange to flange with the drums installed
    - 47.25 from spring bolt to spring bolt (across the axle)
    Shafts:
    - .194" (5/16 ?) C-clip, thicker than the 10-bolts.
    - 33 -spline
    - 1.376 dia at the spline.
    - 1.703 dia at the machined wheel bearing surface
    - The shafts taperd in steps, 1.376 to 1.420 to 1.650 to 1.703
    - 4.5" center hub dia.
    - 8-lugs on this one

    The truck I measured from was a 2000 C/K body, (4wd IFS) 4-doors and a short-bed. SBC and 8600 GVW. A bit of an odd option package.


    Cut/copy and pasted from another post, I spent sometime measureing all that out, so I'm gonna milk it for a bit. /forums/images/icons/smile.gif
     
  9. 79Beast

    79Beast 1/2 ton status

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    Re: will semi-floating 14 live through 39\'s?

    I admit to being overly harsh on the right pedal. When in doubt gas'er out. I ran a sf 14 bolt with 38.5X11 Boggers for a while. It lived. A buddy of mine tore up his ff 14 over and over. He now has a sf 14 and it holds up to 38" swampers. Don't overreact......I'm not saying its stronger or anything.....just competent.
     

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