Fuel Rail

About

LS Fuel Rails and EFI Fuel Rail Systems Build a reliable EFI fuel delivery system with EVIL ENERGY fuel rails , matching intake manifold bundles, and complete LS swap fuel system kits . Designed for selected GM LS engine applications, these products help distribute fuel evenly across the injectors while providing the secure connections required by high-pressure EFI systems. These fuel system components are suitable for LS swaps, EFI conversions, performance upgrades, and custom engine builds where the original fuel rail, injector configuration, or fuel line routing may no longer meet the requirements of the new setup. Available Fuel System Configurations Choose from standalone EFI fuel rail kits, intake manifolds with matching fuel rails , or complete fuel delivery packages. Available configurations cover selected LS1, LS2, LS6, Gen III LS1/LS2, LS3, and L92 engine applications. Choosing matched components can simplify fuel system planning and reduce compatibility problems between separately purchased rails, injectors, hoses, regulators, and fittings. Engine and Injector Compatibility Before selecting a fuel injector rail , confirm that the rail is compatible with your engine, intake manifold, injectors, and fuel system layout. Engine displacement alone—such as 5.3L or 6.2L—is not enough to guarantee correct fitment. Check the following specifications before ordering: Engine code and generation: Identify the exact LS engine family and generation. Intake manifold design: Confirm the cylinder-head port shape and fuel rail mounting pattern. Injector compatibility: Check injector style, height, O-ring size, and connector clearance. Fuel pressure requirements: Match the rail, injectors, pump, and regulator to the required EFI pressure. Feed and return layout: Determine whether the build uses a return-style or returnless fuel system. Rail port size: Verify the port thread and any adapters required to connect the rail to the existing AN fuel system. Always compare the spec