Holley Tube Type Accelerator Pump Discharge Nozzles - .025" 4087BK Fuel Forward Dirt Late Model

Fuel Forward Dirt Late Model

Balance Bar

and to complete the package

1968-1977 GM A-Body vehicles (Chevy Chevelle

Holley Tube Type Accelerator Pump Discharge Nozzles - .025" 4087BK Fuel Forward Dirt Late ModelA good selection of accelerator pump discharge nozzle sizes is indispensable to the proper tuning of the accelerator pump system. The nozzle hole size determines the rate of fuel discharge. a larger hole will "shoot" the fuel at a faster rate, and with less pressure, than a smaller hole. Sizes are stamped on each nozzle. For example, the number "31" indicates that the nozzle hole size is . 031". Various styles of nozzles are offered by Holley,