Specialty Carburetors - There are plenty of times where carburetors are forced to operate in unique and demanding conditions that a typical general-use carb simply won’t tolerate. Car owners running superchargers, tunnel rams, or working with primitive OEM carbureted emissions controls need the focused approach that Holley Specialty Carburetors deliver. These highly specialized designs make it possible to get the advantages of Holley carburetors, without giving up your preferred engine configuration.