FloatThe float maintains a constant level of fuel in the float bowl, and while it seems to be a simple system, it has to function correctly to maintain the proper air/fuel ratio. If the fuel level is ...

If you are in the midst of a good old fashioned bench racing session about your favorite high performance engine, at some point the name Holley is bound to turn up. As talk turns to Holley carburetors ...

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 ...

Holley came out with the first modular carburetor, the 4150, back in '57. By '65, the 100,000,000th carburetor came off the Holley assembly line. Today, Holley still makes the 4150, heck, it even ...