The original carb for 1946 would be a Carter W-1 574s.

ACCORDING TO THE CARTER RECORDS: Carter YF 964s was released as a replacement carburetor for Chevrolet 1937 through 1952. It was never released for 1932~1936 nor was it released for 1953~1962. And it only had one base (throttle body).

Jon.


Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify.
If you truly believe "one size fits all," try walking a mile in your spouse's shoes!
The Carburetor Shop