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Old 03-26-2013, 03:51 PM
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lg1969 lg1969 is offline
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The reason your secondary did not open all the way is that is all the motor wants. Secondary will only open what the motor needs. If you use a 780 CFM carb and the motor can only pull 700 CFM, the secondary will only open so much.
BTW: I do not have check ball in dual quad vacuum secondary Holley tunnel ram setup and does not bog at all. The tires spin so fast it practically put a hole on the black top, and it has 15" of vacuum at idle.

Last edited by lg1969; 03-26-2013 at 04:05 PM.
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