Carburetors

Before you buy a carburetor,please check that you are buying the correct size.Most carbs ’ are sized by how many cubic feet of air per minute,,will pass through the venturies.You can call us,or you can check out the “interactive carbureter selector ” on the Holley website--www.holley.com.Carburetors will function better if they are mounted. Street Avenger carbs have many features built in,that would be extra on a regular Holley carb.The secondary chamber is fitted with a quick change lid to enable you to change the spring in a few seconds,the needle &seat is adjustable &clear view sight plugs are fitted to make float level adjustment easier.An adjustable electric choke is fitted to some models & there are two bronze type inlet filters to keep contamination away from the needles & seats.If you need to fine tune the secondary jets,then a secondary metering plate is fitted as standard.Designed specifically for the Street enthuisiast.
Truck Avenger carbs are designed with a unique fuel metering block that eliminates fuel spillover through the boosters at extreme angles to enable climbing a 40 degree hill,and traversing the side of a hill,or nose down on a slope at around 30 degrees.Features:The secondary chamber is fitted with a quick change lid to enable you to change the spring in a few seconds,the needle &seat is adjustable as well as spring loaded &clear view sight plugs are fitted to make float level adjustment easier. An adjustable electric choke is fitted to some models & there is a single inlet with filter fitted,to keep contamination away from the needles &seats.If you need to fine tune the secondary jets,then a secondary metering plate is fitted as standard.This carb is designed specifically for the Off-Road enthuisiast.
Double Pumpers are usually used for Drag Racing and other forms of competition.Greater care must be taken for “size selection ” with a double pumper.Under full acceleration,double pumper,mechanical secondary carbs,initially depend only on the accelerator pumps to provide adequate fuel,until enough air flow can be established to begin pulling in the main system.The larger the carb,the higher the airflow required to accomplish this.If the carb is too large,the pump shot will be consumed before the main system starts.The result is a “bog ”.Remember,too much fuel will cause “cylinder bore wash ” and can cause serious damage to your engine.


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