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Thread: Dyno video from Shootout

  1. #16
    Join Date
    Apr 2002
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    Home of the Whopper
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    Sounded pretty good on the dyno to me.

  2. #17
    Join Date
    Jan 2005
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    Northern Cambria PA
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    Quote Originally Posted by David Neibert View Post
    Good info thanks for sharing. I had XP103 iridium plugs gapped to about .030 (see picture), and now I'm using NGK 7317 that look like the copper Autolite 103 plug gapped to .030. I had very similar voltage issues in the past and tried a variety of alternators with varying success. Last year I went back to the stock SC alternator with a 3" under drive pulley and it is holding close to 13 volts at WOT. I'm also a big believer in the stock coil pack and plan to buy another new one for a backup.

    Attachment 69061

    David
    Glad to hear your pinning it down. I'm running close to 10:1 compression and 24ish # boost probably why the car seems to like the tighter gap on the plugs.
    I have tried several alt myself and best so far is 6g but I keep ruining them, one on it now is brand new and I put a under drive pulley on it to slow it down in the higher rpms seemed to be working ok when I parked it but never got any track time with it.

  3. #18
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    Apr 2002
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    St. Charles, MO
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    21,030
    Quote Originally Posted by Micahdogg View Post
    Sounded pretty good on the dyno to me.
    Hi Micah,

    It was running pretty good on that first pull (swapped plug wires just before going on dyno) and it only stumbled a little at the hit and above 6300. The 2nd pull was a lot worse making 480 and it continued missing the next day on the track, really bad if I turned on the methanol. Runs great now, even with the methanol on. To reduce misfiring I was short shifting at around 5500 in 1st and 2nd, but as soon as I hit 3rd it was snap, crackle, popping.

    David

    PS: Missed you and Tonya at Rods & Hogs & Shootout.
    Last edited by David Neibert; 10-20-2018 at 11:13 AM.
    1991 SC AOD 4.2..2.3 Whipple..........10.910 @ 125.61
    2016 SRT Challenger Hellcat.............10.597 @ 135.78

    My Garage

  4. #19
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    Jan 2005
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    Northern Cambria PA
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    What rpms are you trying to reach?

  5. #20
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    Apr 2002
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    St. Charles, MO
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    21,030
    Quote Originally Posted by no164ford View Post
    What rpms are you trying to reach?
    I want to shift at about 6700 rpm on the track.

    David
    1991 SC AOD 4.2..2.3 Whipple..........10.910 @ 125.61
    2016 SRT Challenger Hellcat.............10.597 @ 135.78

    My Garage

  6. #21
    Join Date
    Aug 2005
    Location
    Paoli Indiana
    Posts
    4,706
    Quote Originally Posted by rzimmerl View Post
    Ya I can. Its ~$100 plus a set of whatever wires you want. I can also make an adapter harness that will let you use a stock coil if ever needed.
    Is it physically smaller than the oem pack? I have some clearance issues that it may resolve if it is.
    93 SC Red Auto 111k
    2013 Shootout Bracket ET First Place
    2015 Shootout Car Show Honerable Mention
    2016 Shootout Mod-1 First Place
    2018 Shootout Pro Street Runner Up
    4.2, 2.3 Whipple, 3.73s AOD
    422rwhp 11.360 /??? mph

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