There are at least two different primary metering block gaskets for a typical 4150 and many 4160-style Holley carburetors. We’ll use the very popular 600 cfm Holley vacuum secondary, commonly known as ...
Everybody knows about the Holley 3310. It has become a popular choice as an affordable, vacuum secondary 750-cfm carburetor. But the one you buy today isn't quite the same as the original 3310 from ...