I'm rebuilding a Carter WCD, tag number 663S. I need some settings information. First, can anyone tell me the application (make, model and year) of this carburetor. It has the vacuum switch so I'm pretty sure it is for a Buick and it will be going back on a Buick. Also, I need the float level setting and initial setting for the idle mixture screws for this carburetor plus any other info you might have about this tag number. Many thanks!

663S fits a Buick Eight "40" "50" 1948 "50" 1949 it can be used in place of a 606s,608sa,608sc. float hight is 5/32 inch idle mix screw 3/4 to 1 1/4 turn, i have the book on setting of the pump and Metering rod adjustments as well as the starter switch should make contact between 30 and 45 deg.

Albert. Thanks for the information; I'll incorporate the settings tomorrow AM. I was hoping that someone would have the book on this carb. You saved me a lot of digging, I appreciate it.

I have The Carter repair manual, covers from the 1930's up to 1956 all there carbs, part# and uses, as well as settings this is about a 4" thick book. if you need more information. There is also a procedure for setting the metering rods and the choke unloader settings.