Mustang Fun

[Vic's 65 mustang]

So when I have the chance, I buy parts for the mustang. What has me stumped right now is the new edelbrock 600 cfm carb that I recently installed. It revs really high at the start until I accelerate on the gas. My thoughts at this point lead to a vacuum leak but I don't know. I'll do some trouble shooting for a leak and see where that takes me. This is my fun moment, what's yours?