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Old 12-21-2009, 03:53 PM   #9
Thealien
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Join Date: Jun 2007
Location: Pine Ridge Florida
Posts: 4,126
Re: LS engine swap info

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

Last edited by Thealien; 01-06-2010 at 11:51 PM.
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