Drive shaft length needed

Discussion in 'Oldsmobile Cutlass / 442 / Hurst/Olds' started by xitabl442, Jul 12, 2011.

  1. xitabl442

    xitabl442 Master Mechanic

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    Hi guys,
    My 700R4 went on strike this weekend on the way home from Goodguys in Columbus. It is now a two speed, since third and fourth are nowhere to be found. Fortunately my original 200R4 freshly rebuilt by Extreme is waiting to be reinstalled. My question is, what is the original length of my driveshaft before I cut it for the 700 transplant? I want to know so I can get one made before the trans goes in. I need to know if you are giving overall length or center-to-center of the u-joint. Another question, should I go with aluminum or steel. I have one of each, but both are too short.
    Thanks in advance,
    David
     
    #1
  2. Bweavy

    Bweavy Master Mechanic
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    Lonnie built your trans? Good guy. I have a few I'll get you a measurement in the morning.
     
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  3. Blake442

    Blake442 Geezer

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    Don't forget that the 442 and GN driveshafts are 1" shorter than other G-bodies because of the 8.5" rear.
     
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  4. xitabl442

    xitabl442 Master Mechanic

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    Did the GN and GNX have aluminum driveshafts? I am leaning toward the aluminum if the cost isn't too much.
     
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  5. JBreu

    JBreu Royal Smart Person

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  6. xitabl442

    xitabl442 Master Mechanic

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    Thanks JBreu, looks like my drive shaft has been too short all along. I think I had it cut to 49" c-c. I'll have to get a price on the aluminum vs. steel and make my decision.
    Thanks again
     
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  7. xitabl442

    xitabl442 Master Mechanic

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    I just ordered an aluminum driveshaft at 51 1/2 c-c. I am wondering now though, is the length correct for the sbc i my car. I forgot about that. Did the 307 set in a different location?
     
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  8. 84cutlass383

    84cutlass383 Master Mechanic

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    how much for the aluminum driveshaft?
     
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  9. xitabl442

    xitabl442 Master Mechanic

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    $306.00. I put it on hold, they have it cut but not welded.
     
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  10. Blake442

    Blake442 Geezer

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    SBC or SBO doesn't matter. The flange of the bellhousing will be in the same place.
    As long as the trans is in the stock location, 51.5" is the length you need.
     
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