just bought a 37-53 carb,,I thought it was a 216,,or 235,,It won't fit on my 235 Chev engine,And i know what a 235 carb looks like,,,Anyway what's the difference between a 216,235,and 261,,I know the 261 won't fit on a 235,,Ha,Ha,,Should've looked before i leeped,,Dave frown frown frown frown frown frown