punisher7
Active member
I have a 327, built up pretty well with a holley 750 double pumper. Car runs really rich- like burns your eyes and blows a ton of black smoke out of the headers. I have a holley blue fuel pump, pressure regulator and gauge. The idle mix screws were about 4 turns out from just snug. I turned them in and brought them out to 1.5 turns and it is running better. It is still rich. I am having a hard time getting the car to idle below 1000 RPM. The carb has glass sights and in the primary I can see gas, don't see any through the secondary sight. I have read that a vac gauge should be used to decide what power valve you should use and also to set the idle screws. I don't know at what idle rpm I need to be at to check my vac levels. I have never tuned a carb, so any input owul dbe appreciated.