The carb is 650 cfm holley single feed vac. secondaries, I have the electric choke, all is set open no choke working on it, it is not hung on or binding, the floats have been set and checked, new needels and seats for them, the idle screws when turned all the way in makes the idle increase instead of decrease like I have seen so many times before, the truck is extremely rich to where you can hardly stand behind it. It carbon fouls every plug even with the delco 45's in it. It sounds like it has a full race cam now, used to run smooth and have a tad lope to it, now have wicked lope, sounds like some old race motors I used to build with huge cams,