ID Carter AFB 4762S, please

...anyone know original application? Thanks.

Are you sure the number is right? Can you post a pic?

Carter original competition series 4758s, 4759s, 4760s, 4761s, 4762s AFB series

If it is indeed a 4762 it's a 750 cfm CS carb without a choke. There were early and late versions of this carb, the jetting, etc. varied between them. There is no specific application as they were over the counter performance parts.