Holley's Ultra Double Pumper 4 Barrel Carburettor - Your choice of Blue, Red or Black billet metering blocks and bases
ULTRA light – aluminum construction saves 5 lbs ULTRA shiny – tumble polished finish holds shine longer ULTRA strong – billet metering blocks & base plates ULTRA cool – Blue, Red or Black anodized billet aluminum metering blocks and base plate ULTRA easy – built in sight window for simple float adjustments ULTRA fast – high performance fuel curves The Ultra Double Pumper Carburettors feature all aluminum construction and are equipped with metering blocks and a base plate made from 6061–T6 billet aluminum. Three different anodized color options (Red, Blue, or Black) allow for a personalized look while maintaining the ultra high strength and durability you get from billet. They Weigh in at approximately 5 lbs less than a comparable zinc carburetor. The new Ultra Double Pumper Carburettors have an enhanced fuel curve for optimum performance, with many more features such as aluminum construction; anodized billet aluminum metering blocks and base plate; 4 corner idle for precise idle control; mechanical secondaries for great performance; clear fuel level sight plugs for easy, no mess fuel level adjustments; Ford automatic transmission kickdown for use on popular Ford transmissions; four vacuum ports for all necessary vacuum accessories; and for the first time on a Double Pumper, factory pre–set electric choke for easy, fast cold start–ups.