- Fuel, Carbs & Intakes
- Carburetors
- Holley Supercharger Carburetors
Holley has come out with a line of carbs that are set-up for those engines on the big iron lung. These carbs are pre-calibrated for blower applications and feature a manifold-referenced power valve. The power valve provides further enrichment to the main metering system when the engine is under a load (low vacuum).
Note: A vacuum hose must be connected from the power valve to a vacuum source on the lower manifold. Failure to connect this port to a manifold vacuum will allow the power valve to remain open at idle#, causing an excessively rich fuel mixture.
What Are Holley Supercharger Carburetors Common Pros and Cons?
871 and 671 supercharger Holley carburetors are specifically designed for boosted applications with a vacuum-referenced power valve that provides additional fuel when the engine is under load or boost. The internal components are also calibrated to maximize performance for supercharged applications. There are not any known negative effects from the use of these carburetors.
Which Holley Supercharger Carburetors Are Best?
When selecting a Holley supercharger carburetor#, determine the correct CFM size. This is based on the engine displacement size#, maximum RPM / redline#, and primary application (street or race). Once determined#, select the carburetor that matches closest to your engine's needs.
How Much Do Holley Supercharger Carburetors Cost?
Holley supercharger carburetors are available in the $825 to $850 price range#, depending on the CFM size.