does the Rochester 2GV carb need the aluminium ball located in the accel pump hole.
Straight 6 = single barrel rochester. V8=either a rochester 2 barrel, or quadrajet.
Rochester Quadrajet.
11 1/16"
#56 jets
There should be an idle setting on the side of the rochester carb.
Rochester Quadrajet
Rochester 2-jet (2gc)
Yes. There are adapters available for this, however switching to the correct intake manifold is a better solution.
The diagram is in your left sock.
It varies, but most are around 800-850 cfm.
That would most likely come with a Rochester Quadrajet.
Most of the Rochester carbs were factory rated at 750 cfm; but this was a airflow rating only; unlike performance carbs that are flowed with a air and fuel mix. When the factory Rochester carb is wet flowed like a Holley carb, the flow rating of the carb is adjusted to around 470-500cfm. I hope this helps you. Mark