Maintains more constant pressure at high rpms It is compatible with gasoline, E85, & methanol Features new billet components and does not require a regulator This fuel pump has been re-engineered to reduce leaks and maintain pressure Designed to increase flow, and machined with 1/2" inlet and outlet to get more fuel to the engine faster Mechanical Fuel Pump - 130 gph at 7-1/2 psi - 1/2 in NPT Female Inlet/Outlet - Small Block Chevy - Each