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  1. #1
    sltx1050's Avatar
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    89 js440/550 after market mods

    i just bought a baunch of bolt ons for a my 550 i have a full mariner exhuast, tdr water box, bcw racing intake and the guy gave me 3 different cylinder heads and one looks like the stock one and the other 2 are aftermarket he said they were for a 550 but the dome look alot smaller then the stock one!! they measure out around 69mm witch makes me think there for a 440 not the 550 am i wrong or are they sapose to be smaller then the
    cylinders????

    and what are your guys opinions on the set up i will be running


  2. #2
    sltx1050's Avatar
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    Anyone I going to be putting everything togeather today I need to figure out if I can use the aftermarket head or the stock head!
    how can you tell the difference between a 440 head and a 550 head?

  3. #3
    sltx1050's Avatar
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    bump

  4. #4
    sltx1050's Avatar
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    Anyone?

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