Hey guys I need some help? Want to put on a carb I got from a buddy on my 57 f100 with272. But the carb lacks a vacuum it just has internally threaded hole that doesn't actually go to inside of carb it blocked can I connect the dizzy to full vac off the manifold or what

Carb is 2300 list 2015 off 60 merc 312 with 260 cfm any info appreciated