I would go with the largest throttle body offered. air flow shouldn't be your limiting factor. its important in a carb only to get the fuel flowing out of the bowls. in an efi system, the injectors fire no matter what so don't limit your HP potential and get a small throttle body. also you have a 496, I don't know if I would run a dominator on there at 2000 cfm if you want to drive it on the street. you could even get away with a 1200cfm version. any larger than that and part throttle driveability will suffer.


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