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Thread: Swap 2.8 V6 TPI to 5.0 305 V8 Carb
          
   
   

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  1. #1
    mysoulwanders is offline Registered User Visit my Photo Gallery
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    Jun 2005
    Location
    East Hartford
    Car Year, Make, Model: 1989,Pontiac,Firebird
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    2

    Question Swap 2.8 V6 TPI to 5.0 305 V8 Carb

     



    I purchased a Firebird/Trans-Am that had this swap done to it. The Speedometer reads fine for the first 40mph, but after that it instantly tops out.

    Would this be a cable issue?
    Need to recalibrate the speedometer?
    Swap out the speedometer for one from a V8?
    “Luck favors the prepared mind." - Louis Pasteur
    "Failure’s a learning experience, and the guy who’s never failed has never done anything"- Wilson Greatbatch

  2. #2
    R Pope is offline CHR Member Visit my Photo Gallery
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    Jun 2005
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    Eston
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    2,270

    If its not an electronic speedo, the head (dash unit) is shot. Go to the boneyard and get another one.

  3. #3
    mysoulwanders is offline Registered User Visit my Photo Gallery
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    Jun 2005
    Location
    East Hartford
    Car Year, Make, Model: 1989,Pontiac,Firebird
    Posts
    2

    Does it matter if the new speedo is from a V6 or V8 dash?
    “Luck favors the prepared mind." - Louis Pasteur
    "Failure’s a learning experience, and the guy who’s never failed has never done anything"- Wilson Greatbatch

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