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Custom Speedo Cluster options Fiero w/3.8 SC w/AT

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  • Custom Speedo Cluster options Fiero w/3.8 SC w/AT

    I am looking for options for a speedo cluster. I am building GT1 Kit on a Fiero Porsche Carrera GT. The Fiberglass dash will fit the Fiero Speedo cluster but I want to upgrade it. I am also going a 3800 SC w/AT series II swap from a Buick Riviera. I did get the wiring harness and computer.

    My question is can I use another speedo cluster? Hopefully I can just splice in the wires and everthing will work great but before I buy a speedo I though I should ask if it would work! And if so how difficult would it be? I could use a Porsche one, but expect a GM on would be easier (just a guess)

    Here is one from a GTO that would fit



  • #2
    Re: Custom Speedo Cluster options Fiero w/3.8 SC w/AT

    FYI

    Here is what I found. The Firebird '98 or older should work. The '99 and newer Speedo clusters use a serial bus which gets data from the sensor directly. Which means it would be difficult to make work.

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    • #3
      Re: Custom Speedo Cluster options Fiero w/3.8 SC w/AT

      Depending on the year of the computer, that data may be available. It may also be easier to use the cluster from the donor, although convering a digital cluster over to analog can be done (I have), but it's not for the faint of heart.

      Bob
      Bob custom '84 Fiero SE --->>> custom F408
      http://www.madmechanics.com/forum/cu...ilepic37_1.gif

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      • #4
        Re: Custom Speedo Cluster options Fiero w/3.8 SC w/AT

        Originally posted by RCR
        Depending on the year of the computer, that data may be available. It may also be easier to use the cluster from the donor, although convering a digital cluster over to analog can be done (I have), but it's not for the faint of heart.

        Bob
        Thanks for the info. The donner was a '98 Riveria 3800 II SC didn't pull the cluster, but think I have both computers. Don't think the cluster would have fit. I would love to get the red one pictured above or the Porche one working. Let me know if I can use serial bus GM clusters or Porche ones.

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