For many, the correct "YF" is the choice to go with to replace Rochester B's. You do need to make sure the one you find is compatible with the needs of your '62 235 though.
There are a number of different "YF" carbs out there. Your picture is too fuzzy to see which model number that one is.
There is a stamped "model number" on the side of the main body casting which can be decoded to figure out what it's original application was before going further in this process. You also need to pay attention to the base casting number to make sure it's a correct match to the body as someone else's previous work/rebuild may have resulted in mismatched parts.
A big helpful info source on
Carter Chevrolet YF 235 aftermarket carbs is provided by our own member expert "carbking". This link is just one of many to his "Shop" and I am sure he will probably chime in here with helpful info as he can.
Pic below is a snapshot of where to look for the "model" number on the "YF" you have.
Hope the one you found will work for your 235.
Dan
