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Thread: Road trip to SCU with my 91 SC

  1. #1
    Join Date
    Apr 2002
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    St. Charles, MO
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    Road trip to SCU with my 91 SC

    Road trip to SCU inc & TI Dyno a few weeks ago with Kathy to get my SC ready for Hot Rod Power Tour. Got the new MTX-L wideband installed, gauge pod rewired, new QH chip installed, new set of shocks installed and then we put it on the dyno to check the tune. Everytime we went WOT the voltage dropped about 3 volts and that was making it go lean. Tried swapping batteries, and switching to a larger alternator pulley for more belt grip but neither worked, so we switched from the custom built 6G alternator, to a stock SC alternator. That corrected the voltage issue and we were able to dial in the tune. Big thanks to my awesome wife Kathy Neibert for making the trip with me and to David Dalke and Kevin Cragon for all the hours of work they put in Saturday. Oh yeah, ended up pulling 466 rwhp on "The Dream Crusher" with my street tune which is about what I expected.

    Here are some pictures I took.
    Attached Images Attached Images      
    1991 SC AOD 4.2..2.3 Whipple..........10.910 @ 125.61
    2016 SRT Challenger Hellcat...............707HP/650TQ

    My Garage

  2. #2
    Join Date
    Apr 2002
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    More pics...
    Attached Images Attached Images      
    1991 SC AOD 4.2..2.3 Whipple..........10.910 @ 125.61
    2016 SRT Challenger Hellcat...............707HP/650TQ

    My Garage

  3. #3
    Join Date
    Apr 2002
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    St. Charles, MO
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    More pics.....
    Attached Images Attached Images      
    1991 SC AOD 4.2..2.3 Whipple..........10.910 @ 125.61
    2016 SRT Challenger Hellcat...............707HP/650TQ

    My Garage

  4. #4
    Join Date
    Apr 2002
    Location
    St. Charles, MO
    Posts
    20,886
    More pics....
    Attached Images Attached Images      
    1991 SC AOD 4.2..2.3 Whipple..........10.910 @ 125.61
    2016 SRT Challenger Hellcat...............707HP/650TQ

    My Garage

  5. #5
    Join Date
    Apr 2002
    Location
    St. Charles, MO
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    20,886
    The last of them....

    Name:  SCU 19.jpg
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    Name:  SCU 20.jpg
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    Here is a video of one of the 1st pulls Dave tried and tires spun badly....me and Kevin had to get in the trunk for about 10 more pulls.



    https://youtu.be/rSNkXLI0JN0
    Last edited by David Neibert; 05-11-2017 at 11:40 AM.
    1991 SC AOD 4.2..2.3 Whipple..........10.910 @ 125.61
    2016 SRT Challenger Hellcat...............707HP/650TQ

    My Garage

  6. #6
    Join Date
    Nov 2016
    Location
    PNW
    Posts
    226
    WOW !! Very nice 91. Thanks for vid/photos.
    Creighton

  7. #7
    Join Date
    Aug 2004
    Location
    Long Island, NY 11793
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    5,110
    Nice David. Very nice way to begin a new season.

  8. #8
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    May 2003
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    Quote Originally Posted by David Neibert View Post
    The last of them....

    Name:  SCU 19.jpg
Views: 293
Size:  280.7 KB

    Name:  SCU 20.jpg
Views: 292
Size:  53.8 KB


    Here is a video of one of the 1st pulls Dave tried and tires spun badly....me and Kevin had to get in the trunk for about 10 more pulls.



    https://youtu.be/rSNkXLI0JN0
    Wernt you at 499 rwhp? Was that on another dyno besides the dream crusher. Do you have the manual valve body?

    Ken

    93 SC Whipple powered 11.648 @ 119.6
    Twin Turbo, air intercooled..yet to see

  9. #9
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    Quote Originally Posted by kenewagner View Post
    Wernt you at 499 rwhp? Was that on another dyno besides the dream crusher. Do you have the manual valve body?

    Ken
    Ken,

    Yes, 499 on a regular Dynojet with my race fuel tune that has 3 degrees more timing. This 466 was with my street tune on the "Dream Crusher" and is about what I expected. We were also doing back to back to back pulls working on the Air Fuel Ratio after big voltage changes from doing alternator swap, and not really letting it cool off much between pulls. Race tune on the same dyno several years ago made a best of 484 rwhp, so I expect it will still pull right around 500 rwhp on a dynojet w/race tune.

    No manual VB on this car. Lentech level 2 Street Terminator with OD delete.

    David
    Last edited by David Neibert; 05-03-2017 at 11:26 AM.
    1991 SC AOD 4.2..2.3 Whipple..........10.910 @ 125.61
    2016 SRT Challenger Hellcat...............707HP/650TQ

    My Garage

  10. #10
    Join Date
    Jan 2003
    Location
    Woodbridge, VA
    Posts
    5,068
    Sweet! Ready to roll!
    ~Chris
    SCCoA Member #1826
    Bettie Riding jack stands
    SCARlet on drag duty now

  11. #11
    Join Date
    May 2003
    Location
    Omaha, Nebraska
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    Quote Originally Posted by David Neibert View Post
    Ken,

    Yes, 499 on a regular Dynojet with my race fuel tune that has 3 degrees more timing. This 466 was with my street tune on the "Dream Crusher" and is about what I expected. We were also doing back to back to back pulls working on the Air Fuel Ratio after big voltage changes from doing alternator swap, and not really letting it cool off much between pulls. Race tune on the same dyno several years ago made a best of 484 rwhp, so I expect it will still pull right around 500 rwhp on a dynojet w/race tune.

    No manual VB on this car. Lentech level 2 Street Terminator with OD delete.

    David
    Just curious if a manual valve body has less slippage due to higher internal pressures. I still have yet to experience the manual valve body in my car until I get it fired up here in the near future

    Ken

    93 SC Whipple powered 11.648 @ 119.6
    Twin Turbo, air intercooled..yet to see

  12. #12
    Join Date
    Apr 2002
    Location
    St. Charles, MO
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    Quote Originally Posted by kenewagner View Post
    Just curious if a manual valve body has less slippage due to higher internal pressures. I still have yet to experience the manual valve body in my car until I get it fired up here in the near future

    Ken
    Ken,

    I don't think there will be any difference you can feel with the internal slippage of transmission. If I read the specs correctly, the fixed line pressure with the full manual isn't actually as high as the TV cable operated variable pressure at WOT, but it's much higher at part throttle. Converter slippage will make it hard to feel anyway. That said I think you will really like the full manual VB and trans brake.

    David
    1991 SC AOD 4.2..2.3 Whipple..........10.910 @ 125.61
    2016 SRT Challenger Hellcat...............707HP/650TQ

    My Garage

  13. #13
    Join Date
    Apr 2002
    Location
    St. Charles, MO
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    20,886
    After swapping to polished underdrive alt pulley, I just need to change the oil & filter and it's road ready.

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    David
    1991 SC AOD 4.2..2.3 Whipple..........10.910 @ 125.61
    2016 SRT Challenger Hellcat...............707HP/650TQ

    My Garage

  14. #14
    Join Date
    Jul 2002
    Location
    Roanoke, Virginia
    Posts
    3,178
    Looks great David! Who all is going on the Power Tour this year?

    -Tim
    Current Collection
    1994 Thunderbird SC - Auto converted to 5spd

    1995 Thunderbird SC - Auto

    1994 Thunderbird SC - 5spd
    1989 Thunderbird SC - 5spd - Daily Driver
    1990 Thunder/Cougar XR7 - 5spd
    1994 Thunderbird SC - 3v Project

  15. #15
    Join Date
    Apr 2002
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    Quote Originally Posted by Tim Groth View Post
    Looks great David! Who all is going on the Power Tour this year?

    -Tim
    Thanks Tim.

    Looks like Me, Kurt K and Tony S will all be doing the Long Haul (all 7 cities) and a few others (like Rod M with the really nice XR7) have said they were going to do a couple stops.

    David
    Last edited by David Neibert; 09-25-2017 at 02:40 PM.
    1991 SC AOD 4.2..2.3 Whipple..........10.910 @ 125.61
    2016 SRT Challenger Hellcat...............707HP/650TQ

    My Garage

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