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5" driveshaft?!

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Wally81k5, Mar 27, 2003.

  1. Wally81k5

    Wally81k5 1/2 ton status

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    5\" driveshaft?!

    My rear driveshaft i got for my 465/205 is 5" across! Does anyone know where this came from... it's out of a 73 3/4 ton, but i don't think it's origional.

    Does anyone have one or see any problems with haveing a telephone pole for a ds?

    How hard would it be to find a ds that is for a 465/205 to a 12 bolt?

    Any good ref's for cutting my own?

    Thanks it advance..

    ps.. i got my twin stick done!! and it works!!
     
  2. DesertDueler

    DesertDueler 1/2 ton status

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    Re: 5\" driveshaft?!

    The biggest problem I would see is you will bash that thing agaist every rock you encounter. Get a 3" diameter at max.

    Dan
     
  3. Flexy K20

    Flexy K20 1/2 ton status

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    Re: 5\" driveshaft?!

    No I think it is stock I had one like that on my 80 K20. The benefit *I* know of is: none. I heard that they can be lighter because they use a thinner metal, but that doesn't make much sense because if the shaft was smaller with a thicker metal wouldn't it be the same? Anyways....
    -fLeXy K20
     
  4. BowtieRed

    BowtieRed 1/2 ton status Author

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    Re: 5\" driveshaft?!

    i want to see a picture!!
     
  5. imiceman44

    imiceman44 1 ton status

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    Re: 5\" driveshaft?!

    [ QUOTE ]
    No I think it is stock I had one like that on my 80 K20. The benefit *I* know of is: none. I heard that they can be lighter because they use a thinner metal, but that doesn't make much sense because if the shaft was smaller with a thicker metal wouldn't it be the same? Anyways....
    -fLeXy K20

    [/ QUOTE ]


    The benifit is usually no sagging.
    They do that on longer wheelbases so a K20 is a candidate.
    My Van has a 4" that necks down to 3" at the ends.
    They are very thin, light and they will not whip when driven at high speeds, but they ar eno good for off road because they will bend or dent easy and that will make them unbalanced and then a kink can make them twist like pretzels.
    On shrot wheelbase like the blazer, go with a 2" thick tube.
    I used a 0.25" wall 2" tube, I bashed it on rocks, it didn't bend, dent or break.
     
  6. R72K5

    R72K5 Banned

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    Re: 5\" driveshaft?!

    rule of thumb is smaller diameter is thicker wall tubing and larger diameter is thiner wall tubing, the 72-older trucks tend to have small diameter thicker shafts than 73-up, if youve ever noticed
     
  7. fortcollinsram

    fortcollinsram 1/2 ton status

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    Re: 5\" driveshaft?!

    I bought a DS out of a late 70's K20 that was that size...it cam in the mail and I thought the box contained skiis /forums/images/graemlins/eek.gif /forums/images/graemlins/eek.gif I took it to my driveline shop and they said it would be cheaper to have them build a new one than try to shorten the lodge-pole pine /forums/images/graemlins/thumb.gif So that is what I did...

    Chris
     
  8. Wally81k5

    Wally81k5 1/2 ton status

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    Re: 5\" driveshaft?!

    I can get a cut and weld done for $60 CDN... so i may just do that. I measuered it and it is only 4.500".. still huge.

    Plus i want to be the guy with the huge shaft.


    Ryan
     

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