Looking for a street performance or all out race mechanical fuel pump? White Box has the pump you need. White Box mechanical fuel pumps range from 80 GPH to 225 GPH in many various applications to meet the fuel demands of most engines.This particular version flows 80 gallons per hour or 302 liters per hour (LPH) at free flow, enough for most street performance oriented big block Chevy 396,402,454 applications using a carb and running gasoline. It's shut off pressure is pre-set at 7.5 pounds per square inch (PSI), so a fuel pressure regulator is not necessarily required but is still recommended so you can fine tune the fuel pressure to exactly what you application needs. This pump has heavy duty construction that allows it to handle continuous high RPM (revolutions per minute) operation. The housing can be rotated for clearance that may be needed in custom applications. It is equipped with 1/4 inch NPT inlet and outlet ports, just add your fittings.