[k-mez]

Just for an update I installed o2 sensors in the header collector and monitored it with a graphing oscilliscope just to confirm what I had thought. I got the accellerator pump problem worked out and also tried going to a larger nozzle pump with no success. No doubt when you get on the gas it goes lean even though the jets were way to rich for my setup. I tried everything and spoke with edelbrock who were very helpfull. but in the end I installed a carter afb carb on my car and poof problem is absolutely 100 % solved. The lean spot when you get on it is no longer showing on the o2s. Only a normal tip in little blip. In a 6sec screen capture the eddlebrock goes lean for 3 sec at its worst. Usually only a second or two. The carter was on loan so now I am not sure if I want to go with the Holley or the carter but it wont be an edelbrock. I have heard from many 750 eddy people of this problem. In the past I have only used 650 versions and never had this problem. Now I am hearing that the 650 doesnt have this problem only inherent to the 750. Also the car idles smoother with the carter carb.