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Total airflow capability at 28" vacuum with .700" valve lift is along the lines of what you see in airflow charts. that is an indicator, but velocity should not be sacrificed, as it is as important. Big runners lose velocity, small runners lose overall flow capability. It's all about finding the balance between these two peramaters for your particular engine combination. bigger is not always better. A small runner head that has been massaged by a good head porter, will often outshine a big runner head that flows more CFM's.
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In a fit of 16 year old genius, I looked down through the carb while cranking it to see if fuel was flowing, and it was. Flowing straight up in a vapor cloud, around my head, on fire.
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