Holley 94 Rebuild - Secondary Carb

[1952henry]

Speedway does, or did sell throttle plates for secondary carbs. They have a different bevel than stock.

A trick to sealing the plates is to get some GM DAG 213 sealant for throttle plates. Paint it around closed throttle plates, wait for it to set, then pop open plates. My understanding is this was done at the factory on the tripower setups.