Carb Help!!!

Did you spray all the orfices out with compressed air,when you had it apart ?
You could have some dirt or a small pebble blocking the flow.
I would take it apart again on a clean bench/ towel. Take your time.
Once apart,blow all the orfices,jets,ect,out with compressed air. Double check the float level.Put it back together. Turn the A/F screws all the way in (do not over tighten)and then,back them out 2 turns. Start the car and set the idle to 900 rpm's.

This is all with the understanding that you have the proper gasket/gaskets under the carb,and no vacuum leaks. And the rest of your car/engine is in order.

Refer to an Edelbrock manual for proper tunning of the carb. If you don't have one,you can look it up on their website. YouTube also has some good videos on how to tune an Ede carb.