Great info guys.....I've really applied lots of this knowledge and have got the engine ideling much better.
Best adjustment seemed to be to open the secondary idle adjustment just a bit....really pain in the butt to get to that small screw from the underside of the baseplate but I was able to get a couple of rotations out of it to move those butterflies just a tick, adding some additional air. This allowed me to back off the primary idle screws so that I could make sure I was operating on the primary idle circuits.
Now I'm moving on to the accellerator pumps. When I hit the throttle I get a little hesitation before picking up. The holley tech site says that its almost a sure bet that the squirters need to be increased. Let me run down the numbers and tell me if from your experience this is in the ball park??
Primary squirter = 25 <-- this seems low to me
Secondary = 31
Just to recap....this is an strip only bracket car running a chevy 350 +.040, approx 11.5:1 using Brodix Track 1X heads......other carb specs are below.
Model 80528-1 4150 HP - 750cfm mech double pumper
Primary jets = 81 (PV is plugged)
Really enjoying all of the learning....so if you have any thougts about those squirter sizes....love to hear them.
thanks again!