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Dumb Question! Help with axles!!

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by k5'er, Jan 9, 2002.

  1. k5'er

    k5'er Registered Member

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    OK. what does 14b ff mean?? whats the ff?? and whats the diff between d60-70 and so on??? i have a set of 3/4 tons which have 14 bolts on the pumpkin, so i get that much. sorry about the dumb question!!

    Mud! Its cool!
     
  2. outlaw612

    outlaw612 1/2 ton status

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    The FF means Full Floater which means it has no C-clips. Instead the axle bolts on at the end of the housing. The lack of C-clips is where the strength of the axle is.

    There is also a 14sf which is a semi floating axle. This one has the c-clips like the 10 bolt axles do.

    <a target="_blank" href=http://www.geocities.com/outlaw613/K5.html>http://www.geocities.com/outlaw613/K5.html</a>
     
  3. k5king

    k5king 1/2 ton status

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    14b FF = 14 bolt " full floater " there are also 14b SF which is a "semi-floater". i have not really looked into them as yet,,but i believe the difference is that a FF is completely supported by bearing's in the rear end houseing,unlike a SF which is is supported by the center section.

    <font color=purple>ANYBODY LOSE THEIR JEEP????????[​IMG]
    I JUST FOUND ONE UNDER MY BLAZER!!!![​IMG]
    [​IMG][​IMG]</font color=green>
     
  4. JIMs70K25

    JIMs70K25 1/2 ton status

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    14b-is the GM 14 bolts on the cover rear end. ff- full floating, the axles do not have the weight of the vehicle on them just like a front axle, spindles and hubs. Dana 60 9.75" ring gear and the Dana 70 is 10.5" like a 14bff. The dana 70 and 14bff have 1.5" diameter axles the dana 60 has 1.31" axles. Talking all rear axles.


    <a target="_blank" href=http://community.webshots.com/user/70gmc>My 70 GMC</a>
     
  5. k5'er

    k5'er Registered Member

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    good that explains it all! thanks guys! was kinda lost there for awhile!

    Mud! Its cool!
     
  6. jimmyjack

    jimmyjack 1/2 ton status

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    Go on the main page and it has an axle identificationizer thing. Very informative.

    That jeep thing? Yah I understand it....... Like my Blazer? <a target="_blank" href=http://community.webshots.com/user/blazerk5>http://community.webshots.com/user/blazerk5</a>
    Jim
     
  7. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    One smarta$$ taught me the difference between the 14SF and the 14FF, is that if you're axle breaks and the wheel falls OFF.....that's a SF axle. If the wheel stays connected.....that's 14FF!!! [​IMG]

    The reason is linked to what people have already said....SF axles only have a single bearing and the axle not only has to deal with the stresses of twisting the tire, but also needs to carry the weight of the truck. On a 14FF, the weight of the truck is supported on 2 bearings per side, so the only job the axleshaft has to do is turn the tires....

    Hope that paints a somewhat clearer picture.....and YES there is an axle identification "thingie" on this site, to help you.

    FWIW -&gt; Most people here would agree that a 14BFF is the way to go. It's CHEAP &amp; STRONG. The downside is that all the 14BFFs are 8-Lug wheel patterns.....the 14SF were only available in 6-Lug (as far as I know)



    -Greg72

    '72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
    <font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>
     

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