4160 Holley help

What is the carb # on the choke tower? One of us will be able to look it up and tell you some of the original specs, like original jets, power valve & squirters. Should be 4 numbers and probably have a "-" with another #.

The Holley 3310-x vacuum secondary carb, for example, came with 72 jets up front and a power valve. The metering block conversion recommended 75 or 76 jets to replace the metering plate. No secondary power valve. Holley has a jet conversion chart for each of their metering plates.