When i did that with my Holleys The Full vacum at idle over time would Put a hole in the diaphrams In short time.hum?Once i changed it to a meterd vacum I no longger had issues. Secondly the advance should increase as rpms go up and at a max set rpm. (Ex. 32 degress at 3600-3800 performance cam) stock cam is lower.
just my 2cent issue & opion.
God doesn't like ugly.
