Low Vacuum from crate 360

Glad you had an easy fix, always nice to find simple problem.

FYI, if you are looking for vacuum leak, spray some carb cleaner around intake/head union, carb base, vac lines at carb etc. If your car picks up/drops rpm, you have found your leak. The rpm change will vary depending on how your car is jetted. If you ever have to test booster, pinch line with needle nose pliers and see if RPM changes. Typically, you will get a slight rpm drop pinching line but not a big change.

Want another tip? Does your engine misfire under load but cant find bad plug wire? Put water in a spray bottle and mist wires while engine is running....bad wire will make itself very obvious.