Hey guys,
I have a 93 LT1 car that I am swapping a 98 LS1 into. I need to know what I can do to make the fuel system work without dumping a grand into the install. I have no problem running fast fuel rails, and stainless, but I need to know what I can do for return wise...I know someone has to have run into this on a LS1 Swap into their LT1 car....The car is gonna be stock with a few bolt ons for now. So I wouldn't see the need to get an Walbro Pump, when I have a BRAND NEW LT1 Pump in the car...

 

The LS1 runs on a dead-end (no return line) system, operating at 58psi. The regulator is back at the pump. You could keep your LT1 supply and recirc lines by using a new bypass regulator, and dead-ending the supply line to the LS1 rails. If you can get LS1 rails with a return line, that would solve the problem as well. You do need to see if the stock LT1 pump wll comfortably supply the LS1's required liters per hour at 58psi, since it was originally designed to feed a 43.5psi system.

 

Thanks man your a savior, still will take parts list of people who's done it! Thanks Injuneer your the man, not the first time I've said that to you though!!!

No biggie I can get the Walbro Pump if need be for the LS1....

It'd be sweet if I could find a set of 97-98 Vette fuel rails with the return, but so far no luck...