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Old 04-28-2013, 05:56 PM
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Originally Posted by spinn View Post
I think the standard for cfm is measured differently for 2bbl / 4bb / 2x4bbl induction. 1.5 inches is the calibration standard 1x4bbl. Using the same flow across two carbs , two 750s would pull about 850cfm total on that tunnel ram induction. The number of cfm the engine sees is dependent on the pressure drop between the carburetors.

850cfm is definitely okay for the application.

2x 600 would pull 700cfm on a tunnel 2x4.

My numbers are probably a little off, but do you get the concept.
Yep, understand where your coming from. Thanks for the help.
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