The most ubiquitous speed part on the planet has to be the Holley four-barrel carburetor. While millions have been produced, there are a few that are special. In our case, we've been harboring a ...

Holley came out with the first modular carburetor, the 4150, back in '57. Today, Holley still makes the 4150-heck it even makes hopped-up versions for everything from drag racing to rock crawling.

Rebuilding a carburetor can be a daunting task if you've never done it before. There are tons of small parts, screws and gaskets that need replacing, and a lot of pieces that need cleaning or ...

Playing with old cars and carburetors means you must do a little maintenance occasionally. After a long winter’s hibernation, the primary float bowl of the carburetor on our small-block flooded over ...

Recently while on the AMSOIL Great American Circle Track Tour, Bob Bolles and I stopped by Tour sponsor Holley's corporate headquarters in Bowling Green, Kentucky. While there, we got a special treat ...

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 ...