Hey guys ive got an Edelbrock 1411 750 CFM carb sitting on my 400 block and was curious if there was anyway to modify it so that it would perform as a 600 CFM ive heard you can switch out jets and such but i dont know too much into it any info on this would be appreciated thx.

 

There is no way to change the flow rating on a carb, jetting is only changes fuel flow not air flow. You could tune it to run good on 400 but it will never be a 600.
-Johnboy