The process is the same but the constituents produced can be different different. Bruce spoke about "burn styles" now go and think about that one for a while :lol:If you look at what Greg wrote here he stated quite clearly that it was about energy management. Why, because there are many factors that affect vaporization (liquids don't burn gasses do) and where it happens. To give you an example Bruce changed the camshaft on his engine going larger (From memory a local prostock class) and that changed the vacuum generated most likely at the valve curtain diminishing the vaporization rate so to fix it he had to build smaller carbs to get that back what he lost to make the same power.
Which Carter? The earlier original carter 625 or the Federal Mogul produced carbs with different calibrations?