is this a factory mopar holley? if so the idle jet is probably a tube in the main well and can be seen by removing the jets. and, if i'm correct they are very lean and reducing the idle air bleed helps.
It is. We can see it in the photos in the linked threads. There's a photo with the jets removed.
50 rpm less drop in rpm is progress.
.066 IAB = .00342 in sq
.030 wire = .00071 in sq
Equivalent of .059 IAB
You could try larger.
.035 wire would be equivalent of .056
However it is looking like what will be needed is larger IFRs.
I think the engine will like a little less timing at idle, but very well may need even larger IFRs then.
I've not removed the tubes from blocks, but several guys on RFS have. Besides Tuner, Deeproots, Hank, Mike all have with varying luck in not damaging them in the process. So its definately possible. I can try to put you in touch with one of them if you want. Mark who posted earlier in this thread, and Dom (Thumperdart) may have experience removing them also.
if you're allowed to change metering blocks, that might be the easiest solution, assuming all of the circuit connections line up.
