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.
Fuel Pressure Gauge Adapters 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. For a list of 8AN ORB adapter fittings, go HERE.
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. This kit is compatible with all fuel types including popular alcohol mixtures such as E85.
INCLUDED:
20-0232 GM LS Fuel Rail Kit:
-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)
OPTIONAL PLUMBING KIT:
20-0263 Fuel Rail Plumbing Kit, LS1, LS2, LS3, LS6, L76, L99
The 20-0263 Fuel Rail Plumbing Kit, LS1, LS2, LS3, LS6, L76, L99 reuses the OEM fuel hose. It is a direct bolt-on for all LS variations, excluding early LS1 engines that use an in-rail fuel pressure regulator. The inlet fittings permit the use of the OEM 3/8" 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).
THIS KIT IS NOT COMPATIBLE WITH THE GM LS7 OR LS9/LSA RADIUM FUEL RAIL KITS.
Included:
-Green Anodized -6AN Male to 3/8" SAE Male Fitting (x1)
-Black Anodized -6AN Female 90deg Coupler (x1)
-Black Anodized -8AN ORB to -6AN Male 90deg Fitting (x1)
-Black Anodized -8AN ORB to -8AN Male Fitting (x2)
-Black Anodized -8AN ORB Plug (x3)
-8AN PTFE Crossover Hose (x1)
-SAE Fuel Line Disconnect Tool (x1)