The Holley model 1940 is a 1-barrel carburetor. The carb number is by the linkage 7647 (R-7647). Mike’s Carburetor Parts has a rebuild kit K4338 for it.
It was a replacement carb for the Chevy 230 and 250.

Mike's

Last edited by jimgmc; 04/14/2024 5:11 AM.