The BlackJack Carburetor is a high-flow performance carburetor designed to be user friendly utilizing a proven annular discharge design with modified internal circuits. It consistently offers instant throttle response without loading up, even after prolonged periods of idling.
The BlackJack Carburetor incorporates a flow bench designed, CNC machined billet air velocity stack with a true venturi providing more precise high speed transition. There is no booster venturi or protruding nozzle tube to restrict flow.
Unlike other high performance carburetor designs that feature a straight through design with little or no venturi area, The BlackJack Carburetor features an expansion area just after the venturi. This lower pressure area draws more C.F.M. through the carburetor.
The profiles and angles of air entry on the velocity stack were CAD designed and flow tested to allow better function with a low restriction air filter. Through the design, air is drawn from the sides and is guided along the walls of the velocity stack allowing the majority of the air to flow through the center.

At the heart of the BlackJack Carburetor are 12 small fuel delivery orifices strategically placed at the point of highest air flow velocity. This results in superior fuel atomization, especially at partial throttle and sudden acceleration. The design instantly changes the fuel from a liquid to a true gas vapor stage producing more peak horsepower and better combustion throughout the entire RPM range.
The BlackJack Carburetor is superior when compared to others currently available. BlackJack Carburetors are easy to tune and don't load up, even under extreme conditions. And BlackJack Carburetors produce instant throttle response with more bottom end power, better mid-range acceleration and unmatched top end.
The bottom line is that even people who choose to research, test and compare the BlackJack Carburetor to all the other carburetors on the market, end up using the BlackJack Carburetor .