How many CFM is too much for a ......383 +.030 over, Edelbrock Performer heads, MSD ignition, headers, auto 727 with 2400 converter and 3.91 gears. Currently has a FAST EFI. It is not my preference, but I would like to try dual quads with an Offenhauser intake. The carbs are two 600 cfm Holley 4160s. Am I wasting my time with this? Ideally I think I would be better off with two 400s, but I would like to use what I have now just to see if the engine will respond to it. However, as you can imagine, removing all the hardware from the efi that is on there now is quite a task if I know that the two 600s won't work and I don't know that. Am I wasting my time, or would it be worth it to slap them on?
