Where's the Wow?

Just wanted to update this thread to help anyone and the future and so everyone who helped me would know.
I am using a thernoquad manifold and Edelbrock 600, needed adapter so I used Edelbrock adapter plate 2696, seemed like engine was strangled so put an open plate adapter. Found what felt like 50hp!
DO NOT use one of these.

Were you feeling this 'strangling' at the higher RPM's or all through the RPM range?