What's the difference when a carb, lets say a 750, is "re-worked" to flow 820cfms, and a 750 carb that uses an 850 baseplate? I don't know anything about carburators, so as stupid as it may sound, please bear with me. I am planning on rebuilding my carb, but before I do, I am planning on reading up on some Holley rebuild books to get my knowledge up to par. Thanks for any and all input graemlins/beers.gif