Fuel system (any chance a mod can move this post up?)
The LS engines require 58-60 pounds pressure at the fuel rails. Older fuel rails had a regulator on the rails and there is a feed and return on these engines. On the later fuel rails there is only the feed on the rail. You need to have something like the filter regulator shown below to return the excess fuel to the tank. Some of the tanks these engines came with did this internally in the tank.
Corvette filter/regulator
I don't know how long this will last but a decent deal on the regulator/filter and he will take offers for less I am told
GF822
Lots of people use Walbro external pumps
Walbro external pumps and fittings
Dorman quick disconnects for GM fuel line
Dorman 5/16ths
Dorman 3/8ths
Russel AN quick disconnects
Russel 3/8ths
Russel 5/16ths
Don't have a way to make the GM quick disconnect? Try one of these
Dorman flare to quick disconnect
Fuel pump tank adapter
F-body LS1 fuel pump adapter kit
here is an installation tutorial of the adapter kit
Tutorial of adapter kit
Another gas tank modification
EFI pump tank mod
Dual tank info
Compliments of Glock35ipsc