430 - Had to cut new fabspeed headers | FerrariChat
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430 Had to cut new fabspeed headers

Discussion in '360/430' started by Shox987, Oct 31, 2025 at 10:47 AM.

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  1. Shox987

    Shox987 Rookie

    Jul 13, 2025
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    Patrick Salvant
    #1 Shox987, Oct 31, 2025 at 10:47 AM
    just my opinion
    Fabspeed
    headers are well built
    Pipe gauge , welds and finish are great and can definitely take a beating I heated them with a torch cherry red a beat with a hammer but
    ended cutting the headers for clearance issues on
    My Novitec supercharged 430. I tried to dent them but it was getting extremely dented and still not fitting
    So cutting and welding in new pipe was only direction to go
    It will be a week or so before local fab shop can mock up something for me to test fit .

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  2. imahorse

    imahorse F1 Rookie
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    #2 imahorse, Oct 31, 2025 at 11:01 AM
    I don't know how comfortable I would be having one pipe a different diameter
     
  3. Shox987

    Shox987 Rookie

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    #3 Shox987, Oct 31, 2025 at 11:06 AM
    that is the reason i cut them more than likely wont be equal length headers anymore either
     
  4. CoreyNJ

    CoreyNJ F1 Rookie
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    #4 CoreyNJ, Oct 31, 2025 at 12:49 PM
    I would have just gone with challenge headers since the OEM headers fit your modified 430 with the supercharger.
     
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  5. ADA///M

    ADA///M Karting
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    #5 ADA///M, Oct 31, 2025 at 1:05 PM
    It's likely very negligible impact. People have done tests denting the crap out of them with no real impact. It's not ideal but I'm sure it's just fine.
     
  6. kestrou

    kestrou Formula 3
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    #6 kestrou, Oct 31, 2025 at 2:35 PM
    Wish we lived closer together - I’m a moderately skilled welder and have made many sets of motorcycle/chopper pipes - coulda hooked you up for a beer! :)

    Kevin
     
  7. Shox987

    Shox987 Rookie

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    #7 Shox987, Oct 31, 2025 at 3:52 PM
    I looked into challenge headers I couldn’t find any .also the pinch welds around on my factory headers were actually touching the blower
    And I couldn’t bring my self to hack up a set of factory challenge headers
     
  8. andrejwolk1975

    andrejwolk1975 Karting

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    #8 andrejwolk1975, Oct 31, 2025 at 4:36 PM
    It is not a critic, just to be clear: as for me it is a job wonderfully done buy I can not stop to look at it like a malformed limb in a wonderful creature.
     
  9. BlacktopRacing

    BlacktopRacing Formula 3
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    #9 BlacktopRacing, Nov 1, 2025 at 11:26 AM
    Thread title reads like a knock against fabspeed.
     
  10. DiSomma6

    DiSomma6 Formula Junior

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    #10 DiSomma6, Nov 4, 2025 at 10:08 AM
    The headers should still have the same flow rate with the constriction. As long as the internal area is the same, you should see no difference at all. Many cars have this (see the Maserati GT/Cambio - the stock exhaust does the same thing in order to clear the steering rack).

    The main thing is the length. That will affect the sound as the detonation order at the tip depends on the speed of sound and will vary slightly depending on the length of the tubes. You can take a cross-plane engine and make it sound like a flat plane just by modifying the headers. Velocity AP mastered this with the Aston Martin DB cars.
     

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