Correct Holley 850, Factory Stage 2 Package

Discussion in 'Holley' started by wagonboss, Feb 20, 2004.

  1. wagonboss

    wagonboss Benny Georgeson was 1st

    What is the correct Holley Carb number and/or Quadrajet carb number that Buick recommended or sold with the Factory Stage 2 package? Much thanks in advance!

    Dan
     
    wagonboss, Feb 20, 2004
    #1
  2. LARRY70GS

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

    Model R-4781 850 Holley carb on the Edelbrock B4B manifold
     
    LARRY70GS, Feb 20, 2004
    #2
  3. wagonboss

    wagonboss Benny Georgeson was 1st

    Thanks, Larry! Is this mechanical secondaries or vacuum, choke or not?
     
    wagonboss, Feb 20, 2004
    #3
  4. LARRY70GS

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

    Holley double pumper(mechanical secondaries) and I would guess a manual choke if any.
     
    LARRY70GS, Feb 20, 2004
    #4
  5. wagonboss

    wagonboss Benny Georgeson was 1st

    Current model 4781 850's range from 0-4781, 0-4781-1 to 0-4781-6. I guess that means the R-4781 has been discontinued, and I imagine there was a GM part number, too?

    Dan
     
    wagonboss, Feb 20, 2004
    #5
  6. CJay

    CJay Supercar owner Staff Member

    Dan- Jegs sells the Holley Double pumper "classic series". Its listed as a 510-0-4781C (Jegs part #) . It sells for 459.00. Its in essence the same one that was available 34 years ago. Most racers mill off the choke butterfly anyway. I doubt your going to need a choke on a Stage 2!

    Jason
     
    CJay, Mar 5, 2004
    #6
  7. staged70

    staged70 RIP

    Did you find those Stage 2 heads ????
     
    staged70, Mar 12, 2004
    #7
  8. wagonboss

    wagonboss Benny Georgeson was 1st

    Hi John--

    I am still looking for some iron heads. Meanwhile, I am in the process of buying some aluminum ones.

    Dan
     
    wagonboss, Mar 12, 2004
    #8

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