Holley 255 LPH OE Style EFI Fuel Tank Modules 12 309 discs rotors and hardware Transmission Cooler Lines For 88 91 108 0062 FBHB Transmission Cooler Lines For 88 91 Chevy Camaro Pontiac Firebird 5 1 L6 1977 1978 GMC C25 305 5 V8 1979 1981 GMC C2500 350 5 This in tank fuel pump module is a high pressure unit that flows 255 liters per hour (LPH) and is capable of supporting electronic fuel injection (EFI) engines producing up to 550 horsepower A pre calibrated fuel level sending unit designed to work with the factory fuel gauge for this application is included This module also features a HydraMat filter which has a unique internal reservoir that keeps fuel available at the pick up and also provides protection from contaminates Fuel pressure is internally regulated to 58 psi eliminating the added expense and effort of purchasing and installing an external fuel pressure regulator no separate return line is required because this module returns excess fuel right inside the tank 6L V8 1957 Chevrolet One Fifty Series Base 283 4