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  1. #1

    Default Holley 50cc pump

    Hi,
    Does the Holley 50cc pump go on front primaries or rear secondary's...
    My carb is a Holley 4778-2 double pumper.
    Thanks,
    Ed

  2. #2

    Default

    Originally, neither. Where was it? Must have been added by somebody? 50cc pumps (and bigger pump cam, bigger pump arm, etc.) aren't usually necessary except in specific situations in need of nearly twice the amount of accelerator pump shot fuel... and not always, but if added usually added to the secondaries. Did you get the carburetor in pieces in a box, or ...? Has that one got the straight-leg and bell-shaped skirted boosters? The rarely seen 700 double pumper...
    Last edited by Walking-Tall; 04-17-2019 at 11:34 AM.
    Mike
    1986 Mustang convertible ---> BUILD THREAD
    Past Fox-chassis "four eyes":
    1983 Mercury Cougar LS
    1986 Ford Thunderbird ELAN
    1980 Capri RS Turbo

    Work in progress website ---> http://carb-rebuilds-plus.boards.net/

  3. #3

    Default

    Thanks,
    I put it on the rear.
    ed

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