Where does the vacuum hose from the brake booster connect to? I'm pretty sure its somewhere on the intake manifold, but I can't find where. Thanks for the help

Some were plumbed into the manifold directly, some picked up the vacuum at the carb base. Most Quadrajets had it on the carb base. Any GM manifold I've seen has had a threaded hole on it towards the back approx between the carb and distributor.

What manifold are you running? I can take a look later tonight at my stash and probably nail it down for you.

Bob

Its a 73 nova with eldlbrock peformer intake