Help identifying Holley carbs?

The bottom one appears to be a conventional "square bore" double pumper. So if you can Google around and use venturi/ throttle base bore sizes, you should be able to figure out what it is.

These carbs were list no's 4776, 4777, 78, 78, 79 80, 81

4776 was 600, up each no. by 50 CFM

Here:


https://www.holley.com/types/Double Pumpers.asp