How to Tune a 750 Double Pumper Holley Carburetor?

Answer A 750 double pumper Holley carburetor is a high performance carburetor that incorporates two accelerator pumps that are manually operated. Used for high performance or larger displacement engines, ... Read More »

Top Q&A For: How to Tune a 750 Double Pumper Holley Carburetor

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 Tune a Holley Double Pumper?

Holley double pumpers carry two accelerator pumps, one for the primary and one for the secondary metering block. The accelerator pump comprises a pump cam, pump diaphragm and pump nozzle. Under acc... 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 »

How to Rebuild a Holley 750 Double-Pumper?

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 »