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Thread: '93 Mark 8 aluminum driveshaft into '90 AOD, IT FITS...

  1. #1
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    '93 Mark 8 aluminum driveshaft into '90 AOD, IT FITS...

    I've searched thru 20 pages looking for this answer. HAS anyone successfully put a 93 Mark 8, 1 piece aluminum driveshaft in to an AOD SC without having it shortened and welded? According to the numbers on TCCOA the M8 shaft is ".4 longer, and I would assume the yoke would need to be swapped. Just wondering casue the local yard has one I can get.
    Last edited by rzimmerl; 09-01-2008 at 07:49 PM.
    SCCoA Member#: 2515
    1990 SC AOD 2.1L Kenne Bell
    11.676 @ 121.35 mph
    506hp/478tq
    My Garage

  2. #2
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    I would have to say yes as I put a 93 Mark VIII 1-piece alum driveshaft in my former 91 Cougar XR7 5.0 w/AOD. The 5.0 and 3.8 AOD lineup in the same spot. It did require loosening all the diff bolts to allow clearance for the extra .4".

  3. #3
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    I don't have an automatic car but I bought an aluminum driveshaft from a group purchase here a few years ago. I noticed the aluminum driveshafts yoke is about 1/2 inch shorter then the stock one. I havent had any problems, so I'm calling it good to go! If the Mark driveshaft is a little longer it will just slide in the tranny a little further. No harm that I can see, probably a little more strength if anything.

  4. #4
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    I thought it would fit. I remember sliding the driveshaft into the trans about "1 when I installed my Cobra diff this spring, so I should have plenty of room. Looks like a trip to go pick it up on Monday, for $100 its worth a shot.
    Last edited by rzimmerl; 05-09-2008 at 06:59 PM.
    SCCoA Member#: 2515
    1990 SC AOD 2.1L Kenne Bell
    11.676 @ 121.35 mph
    506hp/478tq
    My Garage

  5. #5
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    Just swapped out the driveshaft this weeked, and it fits. I had to loosen the diff to get it in since it wouldn't clear the pinion nut. There is only about 3/8 of an inch slop in and out in the yoke. By the way you do have to change the yoke to the AOD yoke.
    SCCoA Member#: 2515
    1990 SC AOD 2.1L Kenne Bell
    11.676 @ 121.35 mph
    506hp/478tq
    My Garage

  6. #6
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    sounds like that clearance is to close for comfort
    They don't call me "SLOWPOKE" for nothin!
    http://www.sccoa.com/forums/garage_v...vehicle&id=110
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  7. #7
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    How did this go??? Just wondering because I have come across one of the driveshafts also....
    Anthony Arnold
    Home of "No Cash Racing!"

    Silver 90 AOD 12.03 @ Shootout 2010
    White 94 Auto ??????
    Black 95 5-speed ????

  8. #8
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    I put about 20 miles on it this week and seems to work just fine. I haven't really beat on it yet since I am still fighting a header leak after the new dual 2.5" exhuast was put on. Like I mentioned earlier, I had to loosen the diff to get it in since it is a tight enough fit that it does not clear the pinion nut. It still leaves about 5/16-3/8 float in the yoke.
    SCCoA Member#: 2515
    1990 SC AOD 2.1L Kenne Bell
    11.676 @ 121.35 mph
    506hp/478tq
    My Garage

  9. #9
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    cool... I just thought that for some reason they needed to be cut down a little bit and welded back up. I wonder what the slack is supposed to be or what the differance in length between them is.... Something like .4" or something.......
    Anthony Arnold
    Home of "No Cash Racing!"

    Silver 90 AOD 12.03 @ Shootout 2010
    White 94 Auto ??????
    Black 95 5-speed ????

  10. #10
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    I put them side by side when I had them out, it is about .4 inches longer.
    SCCoA Member#: 2515
    1990 SC AOD 2.1L Kenne Bell
    11.676 @ 121.35 mph
    506hp/478tq
    My Garage

  11. #11
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    Just a little update. I've put about 300 miles on now, and 7-8 hard passes at the shootout with ET Streets pulling 1.8 60 fts.. No problems at all holding up to 285rwhp and 360rwtq.
    SCCoA Member#: 2515
    1990 SC AOD 2.1L Kenne Bell
    11.676 @ 121.35 mph
    506hp/478tq
    My Garage

  12. #12
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    Sep 2008
    Location
    phoenix (east side ) az
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    181

    mark viii swap aod

    mark viii driveshaft ? I want to but this in mine. I have 3.8 aod setup also .

    the limited end play still hasnt affected the tranny right ? anyone else try this ? No issues with the tank ? This was my other question. already have a newer tank installed in the 90

  13. #13
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    No issues with the end play and no issues with the gas tank (I am running a late model tank in my 90).
    SCCoA Member#: 2515
    1990 SC AOD 2.1L Kenne Bell
    11.676 @ 121.35 mph
    506hp/478tq
    My Garage

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