Thanks for posting that link.The carbs I have are the Holley Progressive two barrels,I should have been more specific.I'm trying to find out how to decode these specific carbs as These were used on a lot of different cars IE: Mercury Capri's, Mustang II's,etc. And they had different sizes depending on application.
Unfortunately the books I have only help me with the Early Ford carbs ie: 1100's,2100's,2150's &4100's. Basically I figured if I could id these it may help me to sell or trade them as I have way too many carburetors and I'm trying to reduce ( I have over 100 early Ford carbs from the 60's (Mainly 2100's and 4100's).Which I don't mind keeping.
These I don't need/want as of now they are sitting in a bin that is slated to go to the scrapper,which I would rather not do.