1972GMCSprint

Here's my problem. I've got a 72 GMC Sprint with a GM crate 350, turbo 350 trans. I just put a new edelbrock carb on it recently. The issue is when i start to accelerate i get sluggish response and get a popping sound from the carb. Once its at temp and i'm past that throttle position it runs great. I'm looking for a starting point to troubleshoot this problem.
Thanks