1962 factory 318 poly Carter AFB four barrel, cfm?

I'm running a 1962 318 power pack Carter AFB on my slant six. Runs well overall, although I think it is probably bigger than I need, and it does have a mild bog when the secondaries first open under full throttle in low gear (automatic, 2.94 gears).

Anyone know what the cfm rating on this carb is? To clarify, this carb was OEM on 1962 318 poly motors with the optional four barrel and dual exhaust, rated 260 horsepower.

Is it bigger than the Carter AFB's that were part of the hi-po 273 package?

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