426 street hemi or 440 six c.f.m. ?

Discussion in 'Fuel and Air Systems' started by Marcohotrod, May 16, 2018 at 7:37 PM.

  1. Marcohotrod

    Marcohotrod Well-Known Member

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    last week on graveyard cars Mark asked "what had more carb size-the 426 street hemi, or the 440 with 3 two barrels ?
     
  2. mbaird

    mbaird mbaird

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    6 pack....
    IIRC... 350 + 350 + 500 cfm
    AND .... 2 bbls are measure differently than 4 bbl.

    Correct me if I am wrong.
     
  3. rumblefish360

    rumblefish360 so close yet so far away

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    Yes, rated @ two different pressures drops.
    You are close! 350 center, 500 outboards. 1350 total cfm.
    In 4bbl. terms, it is approximately 950cfm.
     
    • Agree Agree x 1
    • Marcohotrod

      Marcohotrod Well-Known Member

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      426 was 625 and 625 = 1250.
       
    • Big Green Duster

      Big Green Duster Active Member

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      IIRC the race hemi had 770 cfm each 1540 total.
       
    • mbaird

      mbaird mbaird

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      Seeing as how the white 70 Charger behind the 68 Fastback in my avatar has a 6 pac you would think I could get that right...lol
       
    • 67Dart273

      67Dart273 Well-Known Member

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      Here's the thing guys CARTER carbs were measured differently than HOLLY 4bbl. and as noted HOLLEY 2bbls were rated differently than 4bbl HOLLEY. I would guess the 426 4bbls were "more"