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... Sounds like on a stock stroke 440, the annular would work better!


Only if you can get it to run cleanly down low and not pull too much fuel at high(er) RPM.

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Kind of hard to believe the annular model would flow 1050cfm.


That's because it DOESN'T. Annular boosters in a 4150 venturi probably knock off as much as 100 cfm compared to a downleg in the same carb.