Ls1 Fuel System Diagram

If you are installing a later style gen iii or gen iv engine you don t have to route a fuel line back to the tank.

Ls1 fuel system diagram. These computers were service number 9354896 or 12200411. Fortunately earlier 97 98 corvettes employ the traditional feed and return line fuel system. The 1997 1998 corvettes and 1998 2002 f body ls1s used a dual line fuel rail. Pre pump you will want to install a 100 micron fuel filter to protect the pump from debris.

Make sure the fuel hose you use between the pump and the engine is rated for at least 60 psi or 4 2 bar or higher it will be more expensive but regular fuel line is sometimes only rated for 25 psi. Ignition module bank 1 1 3 5 7 bcm and fuel pump starting system schematics ignition module bank 2 2 4 6 8 battery and ignition switch ect engine oil level cruise module. This pump can easily be converted to an6 style fittings to use with hot rod fuel hose lines and make for an easy fuel system install. Once again street performance can modify your existing fuel rails or provide.

The fuel system uses the stock mustang tank with a 2003 ford f350 in tank fuel pump and module. Ls1 fuel schematic. For ls swaps an walbro 255l inline is a very common install. This is a discussion.

Using a 3 8 fuel hose i connected one end to the metal line with a hose clamp and the other end to a 8an hose to 8 female fitting. If you happen to have a non return line ls1 the fuel rails must be modified for a two line system. Fuel rail every time a injector opens and closes no 3 the line you see with the 1 lb rating is for the emission purge system this system collects fuel vapors and stores them in a charcoal canister then while you drive the purge valve opens delivering the vapors to be burnt in ther engine through. Fuel injectors air pump and iac charging system schematics.

Figure i don t need one as the vs v6 intank one can move fuel up to the fuel rail which i m sure is higher than the surge tank is going to be. Mike built a. The early gen iii engines from 1997 to 1998 and some 1999 engines used a return fuel line system while the 1999 and newer ls engines used a returnless fuel system. This system is very difficult to adapt in an engine swap situation.

In 1999 the corvette ls1 went to a single line rail using a filter regulator near the fuel tank and running a short return line back to the tank. Factory computers from 1999 02 camaros or firebirds equipped with the ls1 may be used with this harness.