How to Rebuild a Holley 750 Double-Pumper?

Answer The carburetor is subject to heat, debris and mechanical wear resulting in sub-par performance. Depending on the current state of your Holley 750 double-pumper, the rebuild process may be quick. B... Read More »

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How to Rebuild a Holley 650 Double Pumper?

Rebuilding a Holley 650 Double Pumper is an intricate task that includes completely disassembling the carb, cleaning all its components, thoroughly inspecting certain replaceable components like th... Read More »

How to Rebuild a Holley 650 Double Pumper Carb?

Rebuilding a Holley carburetor is a cost-effective alternative to completely replacing it. There are special "rebuild kits" that will provide you with a range of jet sizes, gaskets, pump diaphragms... Read More »

How to Tune a Holley 750 Double Pumper?

A 750 Holley double pumper has two accelerator pumps and four-corner idle. This is essentially what separates the 750 and larger Holleys from their smaller cousins. The nice thing about these carbu... Read More »

How to Adjust a Holley 650 Double Pumper?

The popular Holley 650 Double Pumper carburetor has a variety of adjustments. In addition to setting the idle speed and the idle mixture, the carb's accelerator pump can be adjusted. Proper adjustm... Read More »