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How Carburetors Work

The triple-venturi area of a Q-jet creates three distinct areas that provide a particularlyb strong carb signal to the main fuel system. This affords extremely precise fuel metering. While the outer rings can easily be removed to increase airflow on the primary side, the benefits of doing so on a typical street/strip motor are questionable.
How Carburetors Work - Carbin' It Easy

The triple-venturi area of a Q-jet creates three distinct areas that provide a particularlyb strong carb signal to the main fuel system. This affords extremely precise fuel metering. While the outer rings can easily be removed to increase airflow on the primary side, the benefits of doing so on a typical street/strip motor are questionable.  View Related Article

 

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