360 LA installing Promaxx Aluminum heads

Yea, good move. Get the highest vacuum reading you can while twisting the screws for idle trim and the actual idle speed. It’s a ping pong game with that and distributor timing unless you know where it needs to be from the start.

Then bring the gauge into the cars cabin so you can watch it under various conditions. It’ll tell you what it needs as you learn the car and how it acts and reacts to the various conditions as you drive.