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    Author Topic: Holly 750 cfm  (Read 805 times)

    Offline R/T

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    • Johnson City TN
    Holly 750 cfm
    « on: July 22, 2005 - 07:58:12 AM »
    I just bought this car and it has a Holly 750 on it . Is this carb going to provide enough air  for a 440 or should  try a bigger carb?
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    1973 Challenger (OO/=====\OO)  440 
    Hemis and Harleys
    2008 Dodge Ram Big Horn Edition  5.7 Hemi


    Offline firefighter3931

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    Re: Holly 750 cfm
    « Reply #1 on: July 22, 2005 - 09:11:04 AM »
    I've run 750 holley carbs on many 440 engines....most using that carb were mild builds or stock. I wouldn't use it on a 500hp motor, but for most builds it is sufficient.

    Ron
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    68 Charger RT street/strip Bruiser & 70 Charger RT 440-6pack the ultimate Cruiser

    Offline R/T

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    • Johnson City TN
    Re: Holly 750 cfm
    « Reply #2 on: July 22, 2005 - 09:27:05 AM »
    Sorry, I forgot to add that the builder estimates the HP at aroung 450 . Would I be better going to an 850? I friend has a spare 850 and said I could try it
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    1973 Challenger (OO/=====\OO)  440 
    Hemis and Harleys
    2008 Dodge Ram Big Horn Edition  5.7 Hemi

    Offline MEK-Dangerfield

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    • I don't get NO respect! Member since 1/25/2002
    Re: Holly 750 cfm
    « Reply #3 on: July 22, 2005 - 10:09:35 AM »
    With that much horse power, definitely go with the 850.

      Mike
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    Mike

    1970 Challenger - SOLD
    2016 SXT+.  1 of 524 SXT+'s in Plumb-crazy for 2016.

    Offline Chryco Psycho

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    • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
    Re: Holly 750 cfm
    « Reply #4 on: July 23, 2005 - 02:06:08 AM »
    if you have access to a dyno make a pull with each carb
     My experience suggests the 850 will be the best choice 
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    Challenger - You`ll wish You Hadn`t
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