I’m sorry, I thought I had answered. I know very little about carburetors. What makes a carburetor too big for a particular motor?
What size carburetor should the 250 run?
I’ve run this carb or one just like it for 17 years & never adjusted the needles but mostly because I couldn’t reach them with the hot motor running. They faced the valve cover.


1953 Chevy 153A 3/4-ton
Working on my project since 2015
Follow along in my DITY