Need some help.....swapped cams

when my 284/484 was in 318, my electric choke on 670 avenger didnt always behave so well , usually had to feather it til it warmed up, on the 360 choke works just fine, and i didnt touch the choke adjustment at all, i believe i read somewhere if a cam was a bit too much for the dispacement there could be choke issues.just a thought.