Spec 3

These 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 billet metering blocks, billet aluminum baseplate, 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. They’re a great match for IMCA & UMP modifieds with up to 388 C.I. motors.