Holley List-6528 carburetor

Discussion in 'Holley' started by Darron72Skylark, Sep 3, 2019.

  1. Darron72Skylark

    Darron72Skylark Well-Known Member

    I purchased a spare Buick 350 yesterday. It had a spreadbore Holley carburetor on it. I've never seen one of these before, is it worth holding on to and rebuilding? It appears to have been hooked up to the stock divorced choke.
    IMG_4270.JPG IMG_4269.JPG IMG_4267.JPG IMG_4268.JPG
     
  2. DEADMANSCURVE

    DEADMANSCURVE my first word : truck

    although a little "fugly" looking they run fine if rebuilt carefully and no one has been inside making improvements . at work so I can't reference my holley info but probably 650 cfm and mechanical secondaries .
    there is not too many parts that interchange with the regular 4150 and 4160 series holleys . just made to be a qjet replacement pretty much . besides the obvious dif's the metering block pins and pump passage are not the same and the metering block contains the pump shot plunger/check . I redid a vac secondary version with dual feed bowls+ . ran great on my 360 sbm and looked a lot nicer but not as easy as it first seemed . info may still be here in the holley section .
    edit : looked a little , no dice . might have been old enough to drop off ? contact me back if you need help or a kit part # or maybe just the oem spec numbers for jets etc .
    email is : deadmanscurve@stny.rr.com
     
    Last edited: Sep 6, 2019
    Darron72Skylark likes this.
  3. DEADMANSCURVE

    DEADMANSCURVE my first word : truck

    2005 ( newest one I've been able to get my hands on ) holley book sez :
    list 6528 - fr jets 61 , rr jets 60 , fr nozzle 25 , rr nozzle 37 , fr power valve 8.5 , rr power valve 6.5
    those carbs don't normally get torn apart and "tuned" but good to check and use as a starting point to see how it runs out . probably oem/holley set up to run good on a SBC so might be ballpark for ya . the rear 6.5 PV is a real commonly used number , the front 8.5 PV is a little more aggressive so might help with the smallish front jets . nozzles might be fine .
    edit : I've used the quick fuel kit #3-206 $38 at summit . the holley kit #37-605 $47 . I can't remember if the QF kit contained the correct PV's . the holley pic looks like it contains 3 so maybe a better selection ? do your homework .
     
    Last edited: Sep 7, 2019
    Darron72Skylark likes this.
  4. Darron72Skylark

    Darron72Skylark Well-Known Member

    Thank you! This is very helpful! Since I already have it, I’ll probably hang onto it and rebuild as a spare. Sounds like it could work better than the 500 com Edelbrock that is in the car now. I’ll save the Qjet I have for the project engine.
     
  5. DEADMANSCURVE

    DEADMANSCURVE my first word : truck

    no problem . contact me back if needed .
    and if it ever comes to it and you want to sell the 500 edelbrock let me know . I have people look for them on occasion .
     

Share This Page