Spec 3
These carburetors are built to a track and dyno proven design. They feature a special venturi and booster combination that provides unmatched power and throttle response, fully adjustable metering blocks, thinned shafts, stainless or plated hardware for corrosion resistance, HP body, alcohol jets, and custom
calibration. These are super smooth, responsive, and make excellent power. If you’re looking for a big 4150 alcohol carburetor this fits the bill. These work well on IMCA & UMP modifieds, & late models with 410 + C.I. big bore/short stroke motors where the desired power range needs to be at a higher rpm.