NO, No, you got it all wrong, all wrong I say, now look, boy over there, now that's a chicken, boy, that there is what you wanna be huntin. Now go on boy and get that chicken.
http://www.youtube.com/watch?v=94OnHsHTQ8E
I've been following along this discussion, and there are a lot of good suggestions.
When you cover the carb with your hand, and block all air going in, it should stall. I'll go check this in my dart, but if it stays running could that indicate a vacuum leak? Carb gasket?
It would wake up some with a stock 340 cam profile, MP replacement, or any aftermarket cam that is designed for street/RV/Towing sort of set up. Intake and carb could be stock 2 bbl, but I'd throw on a 4bbl and a Performer intake or something similar. You'll get lots of responses on this I think!