Reply to "Seeking Carburator Recommendations"

George PAdmin.

The topic of carburetor size is covered in sticky #3. A 750 cfm carb is not too big for a 351C 4V if it is jetted properly. The 4300D factory carburetor is 750 cfm.

In regards to jetting, Holley double pumpers are usually jetted "fuel rich" out of the box, because they are jetted for a motor with low intake manifold vacuum. If you install them on a motor with high intake manifold vacuum, they will be too rich at idle & low rpm. Its best to select a carburetor with leaner jetting, which is normally referred to as street jetting. Sticky #3 also has some carburetor recommendations.

There is always the option of having a "tuner" re-calibrate the carburetor for your motor.

-G

7/1/135:15 PM

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