holley carb questions

hey i have a 69 nova 350 a few mods but im having a problem ( on going ) with my carb. my car runs fine until i go to stomp the gas the car bogs down then revs up after a second or two. i replced the power valve, timing is set at 8 btdc with a stock cam.
i checked the floats but i was on a slight upgrade at the time but even then fuel wasnt really flowing out of the check hole. with not having the floats properly set cause this problem?..i also noticed that my car is running rather rich i cant im not sure how to adjust that without a air/fuel gauge can somebody please help me with this one im to the point that i may just but an edelbrock