1971 360 question

Not sure why you went to that 4.5 PV.
Do you care to enlighten us on what you would have chosen? I know that popular advice is half of idle vacuum but that's been something of a "horseshoes and hand grenades" setting in my own experience.
i did have a problem with my throttle linkage with the holly the cable never had enough travel are you able to have full travel on your gas peddle?
Holley 20-7 Holley Throttle Lever Extensions | Summit Racing