I’ve had a lot of carburetors on my cars over my lifetime and have never had to drill holes in my plates. Never had to never will
Actually some Holley carbs come right out of the box with the primary plates drilled with a .125 hole in each one. Ron
Yes but technology has changed and carbs are more tunable now. And like you said some carbs came that way. No longer needed.
I still think it depends upon the carb and the application. Every Braswell 4760/4825 or Braswell-modified Holley 4150 I've seen over the years (and that includes what they're selling new today) has drilled throttle plates.
If you can't get the ide speed up where it needs to be unless you're off the idle circuit and the carb doesn't have an internal bypass air bleed adjustment that can be tuned, what other choices are there?
FWIW, I'd like to hear from the OP on how the carb ran out-of-the-box, since the settings he posted above aren't. Also, I a$$ume he's tracking AFR, too, and wonder what he's seeing.
