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    1. 12-01-2009 #1
      Yelcamino's Avatar
      Yelcamino
      Yelcamino is offline Rat Pack Member
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      Sep 2006
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      Indiana
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      Throttle body mm = CFM

      Is there a formula to the CFM of a throttle body based on its size?

      How much CFM would a 85mm throttle body be equal to?

      Herb

      1966 El Camino LS408/T56Magnum
      1966 Chevelle 509/T56Magnum
      1963 C10 454/4L80

      PHR CHP CHP youtube

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    3. 12-04-2009 #2
      The Stickman
      The Stickman is offline Registered User
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      Dec 2008
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      Yes anyone have any info here. I have a 4 barrel style TB and would love to know how to figure out it's cfm
      1996 Federal Cadillac hearse
      1988 Eureka Chevy hearse
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    4. 12-04-2009 #3
      4mul8ion's Avatar
      4mul8ion
      4mul8ion is offline Registered User
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      Jul 2005
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      Portland, OR
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      Try the calculator at:
      http://www.pipeflowcalculations.com/airflow/index.htm

      Kevin
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