ThermoQuad 9801S BIG GULP Carter

They are called Carter Super Quads. Rated at 800 cfm. Great carb. They also make a 1000 cfm Kim.
FWIW, the actual cfm differ from the advertised cfm. It all comes down to one word.

Marketing.

Carter did make a pair of race TQ carbs which one pulled down an actual 900 cfm and the other an actual 850 cfm.

The above electric choke is not one of them.