Tuning a Holley 850 Ultra XP #80804. I was wondering if there was a jet kit for tuning the power valve channel restrictions, since the orifice is already tapped with a removable jet in there?
I know the carb section doesn't get much action these days, so I'll try to talk with Holley tomorrow, if I have time to be on the phone that long. Just thought I'd give it a shot.