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 ...

There probably is not a mathematical formula complicated enough to calculate how many perfectly good Holley carbs have been tossed aside in favor of newer models, just because they needed a rebuild.

A great many articles have been written about special racing or ^performance modifications to Holley carbs, but articles covering the basic tuning steps for Holley carbs on street-driven vehicles are ...

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.