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  1. J-MacsMopars

    Does a car need a PVC valve?

    thanks for the info. Now I need to add a pvc valve to the valve covers.
  3. J-MacsMopars

    Does a car need a PVC valve?

    thank you, does it need to actually be the valve, I have holley valve covers and they put a fitting in the back of one, but its not a pvc
  4. J-MacsMopars

    Does a car need a PVC valve?

    I am curious, does the car need the PVC valve on the valve covers? What is its function?
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