How many cfm is a 2 barrell dual jet rochester on a 260 olds engine?

A 2-barrel Rochester dual jet carburetor typically flows around 350 to 500 cubic feet per minute (CFM), depending on the specific model and tuning. For a 260 Oldsmobile engine, the flow rate is generally considered to be on the lower end of that range, often around 350 CFM. It's important to check the specific carburetor model for precise flow specifications.