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    #1

    HO

    Alright..........I have searched the CV archives for a link to the pinouts for the Mark VII vs Box CV's, and can't find it.
    The Mark ECU's are supposed to be plug and play? The 1991 Wiring diagram looks like for 91 Marks, they are different. Everyone has been using the 89 and earlier ones???
    Tags: None
    #2
    To my knowlege, the wiring is the same. I recommend a '88-'90 Mark 7 ECM.
    I used both an '88 and a '89 mark 7 ECM in my HO conversion. Also used a '88 HO SD Mustang ECM, they all worked. Mustang ECM you lose cruise control.
    2003 Town Car Signature - 3.27 RAR, Dual exhaust and J-mod - SOLD 9/2011
    89 Crown Victoria LX HPP -- SOLD 9/2010
    88 Grand Marquis LS - The Original -- Totaled 5/2006

    I rebuild AOD/AODE/4R70W/4R75E transmissions....Check out my Facebook page: https://www.facebook.com/pages/North...48414635312478

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      #3
      i too have a lsc computer......mine is from a 90 mark 7
      scott

      1986 lincoln towncar signature series. 5.0 HO with thumper performance ported e7 heads, 1.7 roller rockers, warm air intake, 65mm throttle body, 1/2" intake spacer, ported intakes, 3.73 rear with trac lock, 98-02 front brake conversion, 92-97 rear disc conversion, 1" rear swaybar, 1 3/16" front swaybar, 16" wheels and tires, loud ass stereo system, badass cb, best time to date 15.94 at 87 mph. lots of mods in the works 221.8 rwhp 278 rwt
      2006 Lincoln Town Car Signature. Stock for now
      1989 Ford F-250 4x4 much much more to come, sefi converted so far.
      1986 Toyota pickup with LSC wheels and 225/60/16 tires.
      2008 Hyundai Elantra future Revcon toad
      1987 TriBurner and 1986 Alaska stokers keeping me warm. (and some pesky oil heat)

      please be patient, rebuilding an empire!

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        #4
        So.....you two just unplugged your factory CV/GM computer, installed the HO motor with the factory CV/GM harness and plugged the Mark computers in? No changing any pins for firing order, AC or cruise?

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          #5
          correct sir

          :bump:

          1986 lincoln towncar signature series. 5.0 HO with thumper performance ported e7 heads, 1.7 roller rockers, warm air intake, 65mm throttle body, 1/2" intake spacer, ported intakes, 3.73 rear with trac lock, 98-02 front brake conversion, 92-97 rear disc conversion, 1" rear swaybar, 1 3/16" front swaybar, 16" wheels and tires, loud ass stereo system, badass cb, best time to date 15.94 at 87 mph. lots of mods in the works 221.8 rwhp 278 rwt
          2006 Lincoln Town Car Signature. Stock for now
          1989 Ford F-250 4x4 much much more to come, sefi converted so far.
          1986 Toyota pickup with LSC wheels and 225/60/16 tires.
          2008 Hyundai Elantra future Revcon toad
          1987 TriBurner and 1986 Alaska stokers keeping me warm. (and some pesky oil heat)

          please be patient, rebuilding an empire!

          Comment

            #6
            Amazing what happens when you ask the REAL HO masters, lol..
            1983 Grand Marquis 2Dr Sedan "Mercules"
            Tremec TKO conversion, hydraulic clutch, HURST equipped!

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