This carburetor is prepared to operate in conjunction with superchargers. They have the primary power valves boost-referenced and the fuel curve calibrated for optimum performance.

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free barry grant #8 line kit part #140027 & a pair of #8 fuel fittings bg part #142111 wow!!  barry grant king demon SUPERCHARGER GAS 1095 cfm (gas) part # 9728020BC with annular boosters Designed for the most powerful blower race engines, the King Demon™ is the most advanced carburetor of its kind. Equipped with removable main booster venturii, & removable sleeves, billet baseplate and deep streamlined air intakes, the new carburetor is a direct replacement for the Holley® Dominator®. It also features three-circuit billet-metering blocks and float bowls with sight glasses as well as adjustable air bleeds, emulsion bleeds and idle feed restrictors. **this king demon supercharger carb will come with BLUE venturii sleeves**ALL NEW STUFF!!, I DELIVER!!!!, BIDDER PAYS FIXED UPS SHIPPING $0 S/H/I, AK, HI, PR, WILL PAY ACTUAL SHIPPING CHARGE,  THANKS