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35 spline 14b SF?

Discussion in 'The Garage' started by 87k10, Feb 23, 2006.

  1. 87k10

    87k10 Registered Member

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    did they make them?
     
  2. sandawgk5

    sandawgk5 3/4 ton status

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    I have always been taught that a 14SF is 33 spline and 14FF is 30.

    Ira
     
  3. 79k20350

    79k20350 3/4 ton status

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    No, no 35 splines. Like ira said, 33 for sf and 30 for ff
     
  4. 87k10

    87k10 Registered Member

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    thanks guys
     
  5. 82K5_6.5L

    82K5_6.5L 1/2 ton status

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    y would a semi floater axle have more splines then a full floater? u would think it would be the other way around right?? crazy ass GM :crazy:
     
  6. sandawgk5

    sandawgk5 3/4 ton status

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    The 14FF was designed in the late 60s and was in vehicles starting in 73.

    The 14SF did not show up until I think 78-79? I would assume that they increased spline count to minimize the strength difference between the 2.:dunno: .

    Ira
     
  7. sled_dog

    sled_dog 1 ton status

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    spline count isn't as HUGE an issue as people make of it. When going from one spline countt o a larger one(say as with 30 to 35 spline stub upgrade on Dana 60) the shafts are often larger. That is the bigger strength gain. Splines help of course. A 16 spline D60 shaft won't be as strong as a 40 spline of course.
     
  8. u2slow

    u2slow 1/2 ton status

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    If you NEED to have 35-spline in an SF axle, there's always the Ford D60SF.
     
  9. dyeager535

    dyeager535 1 ton status Premium Member

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    Moser doesn't say the axle diameter changed, but the torque numbers based on spline count are actually quite different.

    http://www.moserengineering.com/moser_interior/axletech.htm

    Less splines (t-case input for instance) typically result in very deep cuts, (10 spline) which reduces the shaft size quite a bit. More splines (32 spline) result in far less cutting into the shaft itself, plus more engagement of the actual splines.
     
  10. 89GMCSuburban

    89GMCSuburban 1/2 ton status

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    Bingo. More splines, more faces to spread torque onto, hence, more strength.
     
  11. az-k5

    az-k5 1/2 ton status

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    Also with the extra load area the cut can be shallower making for a larger minor diameter. That is where the real strenth comes in. A 16 spline shaft can be as strong as a 40 spline if cut the same depth but you would strip the splines. They try to find a happy meduim between snapping shafts and stripping splines.
     

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