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driveshaft slip yoke spline strength

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Thumper, Jul 28, 2001.

  1. Thumper

    Thumper 1/2 ton status

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    Was wondering... I am going to build my front driveshaft into a custom long strong unit. Which splines are better? More smaller, or less larger? I always thought that 7 or 8 splines would be stronger than a 30 or 35 spline shaft. They use the less spline model on tractor PTOs etc. But I have read the opposite... anyone know?

    Thanks
    Mike


    <font color=blue>Thumper
    85 Fullsize Jimmy
    [​IMG]
    <font color=red>Lets Go Wheelin! </font color=red>
     
  2. Thumper

    Thumper 1/2 ton status

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    no ideas or opinions?

    hmmm

    Mike


    <font color=blue>Thumper
    85 Fullsize Jimmy
    [​IMG]
    <font color=red>Lets Go Wheelin! </font color=red>
     
  3. 84_Chevy_K10

    84_Chevy_K10 Banned

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    More smaller splines are better. There's more contact between the two surfaces that way. That's why we all want more axle splines.

    Tim
    '84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
     
  4. outlaw612

    outlaw612 1/2 ton status

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    More is better
     
  5. drivelineman

    drivelineman 1/2 ton status

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    we offer 1 11/16 20 spline huge and also 1 5/8 10 - there is a 1 3/8 20 but in my opinion its for a suzuki application its so cheesy-

    Owner of High Angle Driveline http://highangledriveline.com
     
  6. Thumper

    Thumper 1/2 ton status

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    OK, so those 20 spline units are supposedly the strongest? Or would a 32 spline something be better? I just am trying to eliminate one of the choices. I can get a PTO shaft6 for cheap... but its only like 8-10 splines. Are they weaker or do they have any drawbacks to the 20-30 spline shafts???

    Mike


    <font color=blue>Thumper
    85 Fullsize Jimmy
    [​IMG]
    <font color=red>Lets Go Wheelin! </font color=red>
     

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