ok it runs but poorly??

thank you to all that posted on helping me finally get my Dart running. Now I have it running I have yet again another problem. it runs a bit rough. smells kinda rich. another problem I am having is, when you are driving, it runs well untill about 1/4 and more throttle. then it bogs and wont come out of it. running really rich. I have new cap, points, rotor, condensor, wires, plugs. I have a new Holley street dominator single plane intake. a 1" spacer/adaptor, and a 1406 Eldebrock carb. My old 318 had 3 cyl dead and had more acceleration than this. the guy that built the engine said that the Holley single plane intake would be to much for the engine. I am wondering if that is not the case. I have a 197? stock 4bbl intake here, and was wondering if anyone else has had this problem. If the intake is to much then I can swap out to the stock 4bbl intake and see if that works.