"There is nothing more gratifying than getting your engine dialed in without the help of computers! No matter that it is always temporary." agree!
Rough'er idle when more duration and overlap is unavoidable, but a properly set timing and a nice 4-corner carb idle will go a long way. My Pantera with a "cam-from-hell" idled miserably at 1500 when I got it. I went through the steps in my book (sorry) and now it idles fine at 1000 also with A/C on.
BTW, temporary, in my experience a bronze colored Holley needs more frequent tune ups than silver colored Summit carb (can't remember English words for what material they are)
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