Radium Engineering Fuel Rails - GM LS1, LS2, LS3, LS6, L76, L99

Click here to download installation instructions (PDF)

PORTS AND FITTINGS

The fuel rail ports are tapped for 8AN ORB.

8AN ORB Adapter Fittings can be found HERE.
8AN ORB Direct Mount Regulators can be found HERE.
8AN ORB Fuel Pulse Dampers can be found HERE.

Appropriate fittings must be selected based on the specific application. Ample space around the fuel rail port(s) is necessary for larger accessories such as fuel pressure regulators, fuel pressure gauges, and fuel pulse dampers. To verify clearance, the dimensional drawings on the product pages can be used as a reference guide.

Manufactured with a large 0.69" internal bore, the fuel rails can support all necessary engine power requirements. They are CNC machined from extruded 6063 aluminum, black anodized, and laser etched for a high quality surface finish. All end ports are machined with 8AN ORB (3/4-16 female) threads. The lower center ports can be used for optional adapters and are also tapped with 8AN ORB (3/4-16 female) threads.

The kit features specifically designed billet mounts. These modular "feet" allow compatibility on the following GM LS engines by simply flipping them and reinstalling into different threaded holes on the rails: LS1, LS2, LS3, LS6, L76, L99

Like the OEM fuel rails, the injector bores are 14mm ID so factory injectors are permitted. 

These fuel rails are compatible with all fuel types including popular alcohol mixtures such as E85.

Not compatible with the factory engine cover. When using an aftermarket manifold, the optional fuel pulse damper might have to be installed at the end of the rail (as shown) rather than in the centre port.

INCLUDED

-Black Anodized Laser Etched Aluminum Fuel Rails (x2)
-Black Anodized Aluminum Mounting Feet (x4)
-Stainless Steel Mounting Feet Hardware (x8)
-Stainless Steel Replacement Mounting Bolts (x4)

FUEL INJECTOR COMPATIBILITY

This fuel rail is compatible with factory or OEM equivalent fuel injectors. If upgrading fuel injectors, consult your aftermarket injector supplier for details. Radium Engineering cannot specify any further injector dimensions other than stating ‘OEM equivalent’. 

PLUMBING KIT

The 20-0232-PK Fuel Rail Plumbing Kit reuses the OEM fuel feed hose. It is a direct bolt-on for LS1, LS2, LS3, LS6, L76, and L99 engines. 

The inlet fitting permits the use of the OEM SAE quick connector. A PTFE -8AN crossover hose is used for the front of the rails. Plugs are provided for all unused ports: (LH rear, RH rear port, and RH center).

INCLUDED

-8AN PTFE Crossover Hose
-8AN ORB to 8AN Male Swivel
-8AN ORB to SAE Quick Connect Swivel
-8AN ORB to 8AN Male
-8AN ORB Plugs (x3)
-SAE Quick Connect Tool

THIS KIT IS NOT COMPATIBLE WITH THE GM LS9 OR LSA RADIUM FUEL RAILS.