51 GMC wiper vacuum line routing with original dual action fuel pump

Discussion in '1947-1954' started by Stuckbolt, May 13, 2024.

  1. Stuckbolt

    Stuckbolt Member

    May 13, 2024
    I am hoping someone may have information on how the wiper vacuum lines were originally routed with the dual action fuel pump. Specifically, the line from the wipers to the vacuum pump inlet and the line from the vacuum pump outlet to the intake manifold. Were both of the lines 5/16" steel? Did they follow the same path as the fuel line and vacuum advance crossing the bottom front of the block? If so, did the lines clip together somehow to lay uniformly? Any photos or illustrations would be appreciated. Thanks!
  2. vwnate1

    vwnate1 Member

    Jan 1, 2000
    I can only say to the Chevies, the steel vacuum pipes had the same O.D. as the hose nipples and there were two of them, they followed the carb to pump bends and path .

    I have no images but they're out there .

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