Just joined this forum need some ideas to get this car to run like it should, has original holly four barrel, petronix ignition, have replaced intake manifold gaskets, new gaskets and inlet valve in carb, new motocraft plugs had to replace one with old AC plug for a miss on #7, engine idles smooth 475 RPM begins to get rough at around 550/600 RPM if I close the choke to 1/4" from closed it will smooth out, goes down the road good at highway speed will sometimes die at a stop in town, Thinking it is a carb problem I would like to keep the original that has never been a problem till this year but have not had luck getting the bug out of it.         

Sounds like a vacuum leak to me. Check all the hose connections and the base plate under the carb.

Y's guys rule!
Looking for McCullouch VS57 brackets and parts. Also looking for 28 Chrysler series 72 parts. And early Hemi parts.

MoonShadow, 292 w/McCulloch, 28 Chrysler Roadster, 354 Hemi)
Manchester, New Hampshire

I'm going with MoonShadow here. My only thought is it's good at closed throttle, and gets rough when the throttle is slightly open. I don't know if those Holleys had a ported vacumn port, but it sounds like it happens on the transition slot from idle to run. The fact it runs good with the choke closed partway says to me it's not rich. Vacumn leak, either form a bad cap on the ported outlet, or as MoonShadow said.

miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ

Have you tried disconnecting the vacuum advance to the distributor?  If that eliminates the roughness when bringing up the rpms, then you are simply experiencing too much ignition timing with no load on the engine.

Lorena, Texas (South of Waco)