Holley 750 Double Pumper

Discussion in 'Engine Topic' started by BackyardCustoms, Jan 9, 2017.

  1. BackyardCustoms

    BackyardCustoms Member

    56
    0
    Mar 23, 2013
    cordele, ga
    IMG_0527.JPG IMG_0528.JPG IMG_0529.JPG I came across a great deal on a 750 double pumper but I have a concern about it missing mixture screws seeing as I only have pictures to go by. I don't have enough knowledge to determine for myself but guy selling says its a 2 point adjustment instead of a 4. I haven't seen a 2 point adjustment on a double pumper. All advise is appreciated!!!!!
     
  2. CorkyE

    CorkyE Veteran Member Lifetime Gold Member

    8,261
    66
    Nov 4, 2004
    Ringgold, GA
    Most are 2 point, including mine. Someone put a 50cc pump on the back, probably trying to crutch another problem.
     
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  3. muscl car

    muscl car Veteran Member Lifetime Gold Member

    19,519
    61
    Jul 8, 2001
    san bernardino calif
    I've seen manyv 750 double pumpers without 4 corner idle
     
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  4. 450bench

    450bench Veteran Member

    2,897
    4
    Feb 25, 2002
    memphis, tn-shelby
    That's likely a 4779-3. Straight leg boosters and 2 corner idle...personally, I like 2 corner better than 4.
    I think 4 corner idle for Holley 750 double pumpers started at 4779-5 or 6.
     
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  5. BackyardCustoms

    BackyardCustoms Member

    56
    0
    Mar 23, 2013
    cordele, ga
    Awesome....thanks!!!! I'm still fairly new to building and hot rodding.....so I'm sure I still have a few newbee questions up my sleeve
     
  6. 450bench

    450bench Veteran Member

    2,897
    4
    Feb 25, 2002
    memphis, tn-shelby
  7. mrdragster1970

    mrdragster1970 Veteran Member Lifetime Gold Member

    .


    I hope that thing is very very cheap.
    It looks old as dirt, and the new models are much better, especially if you don't need the double pumper not that expensive!!!

    Good luck.

    .
     

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