Fuel pump specifications

Does anyone know what the GPH is of a stock fuel pump on a 69 351W? And what the recommended GPH might be for the same engine with a Holley 570 double pumper?

I don’t have a 1969 Shop Manual but the '68 version gives instructions on how to test fuel pump volume and what it should be. If you look at your copy of the manual it will tell you.

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