HOLLEY CHEV BIG BLOCK V8 396 427 454 502 MECHANICAL FUEL PUMP # HO12-835Fuel Pump, Mechanical, Chevy, Big Block, Each Fuel Pump Type: Mechanical Flow Rate: 80 gph 302 lph Fuel Pressure (psi): 7. 5 psi Fuel Pressure Regulator Included: No Sending Unit Included: No Inlet Size: 1 4 in. NPT Inlet Quantity: One Inlet Attachment: Female threads Outlet Size: 1 4 in. NPT Outlet Quantity: One Outlet Attachment: Female threads Gasket Included: Yes Wiring Harness Included: No Mounting Bracket Included: No Mounting Hardware Included: