I removed a Holley from mine and bought a 1.12 hipo carb from Pony Carb somewhere around 2000. Works great, worked even better when I had 4.11 gears. A few years ago I got tired of the higher RPM and put in the stock 3.50 ratio. With the slower RPM build, it seems to take forever for the secondaries to open, at least till I can feel it, seems like about 3000-3500. Should/could it be a little earlier? I’ve read that Holley springs work, but I don’t know if Ford used different springs, only 1 spring, or what Holley spring would be the next step lighter. Also don’t know if PC modified the carb in any way.
I thought about the mechanical kit but really would prefer vacuum.
Stock engine except C90X intake.