430 fuel pump interchange

Discussion in 'Tips On Using The Board' started by 51wood, Sep 23, 2017.

  1. 51wood

    51wood Active Member

    Can I use a mechanical fuel pump from a 425 on a 430? I want to eliminate the return line port on the fuel pump that is on the 430 pump as it is a potential leak point. The 425 pump doesn't have that 3rd port
  2. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    No, the 425 is a Nailhead engine, a different design. All you need to do is block off the return line if you don't want to use it. There isn't that much pressure there.

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