I am rebuilding a 1958 4100 carb. I have tagged and bagged all the parts except for the "Venturi Cluster Assembly". The primary and secondary are different. One set has 4 holes in each side of the brass tubes and the other set has only two. Which set is the primary and which set is the secondary?
The set with 4 holes in each side has the letter A , a backwards B, and a 5 as a code. The other has a F with an upside down 2.
Thanks in advance for the help.
Phil