corvettedave383

Ive got a gm crate LS3 for my 4x4 project, just needing to know weather the engine comes with a fuel regulator?, if it doesnt come with one, whats the best place in fuel system for the regulator?, ive heard the corvette c6's have it in the fuel tank?

any help would be great

dave

Gordonm

Nope not in the fuel tank. The fuel pump I have is in the tank but the regulator is external.

corvettedave383

which side of the fuel system is your regulator, before the fuel rails or after??

also do know the thread size on the fuel rail inlet?

cheers

dave

Gordonm

Mine is before. As you can see on the picture above it is in the rear of the car. This type of regulator is used on the later model LS motors and works very well. The one line goes forward to the rails. The two in the back are feed and return line to tank.

72LS1Vette

You just have to buy a C5 fuel filter. The regulator is built in.



Rick B.

corvettedave383

is the ls3 a non return system?, cos if its not i dont see how having it before will work??

any help?

dave

Gordonm

Yes the LS3 is a so called returnless system. There is only 1 fuel line that goes up to the fuel rails. There is a return at the fuel filter?regulator as you can see in my picture. You can put that anywhere in the system but I choose to keep it near the tank so there is a short return fuel line back to tank.

corvettedave383

ok, thats what I thought, take a look at my ls3 crate engine tho, notice the tube with the blue grumit on it, and how it joins up between the 2 fuel rails?, unless thats not the fuel rails?



cheers

dave

Gordonm

Yes that is the fuel rails. The single fuel line hooks to where the blue plug is located.

corvettedave383

ok thats good to know, at the end of the fuel rail, at the front of engine on the drivers side, you can see a little black cap, what goes on there??

and also whats the name of the fuel regulator your using?, or what type do they call themselfs?, also what psi of pressure do you run on yours?

cheers

dave

Gordonm

The cap is a test port for fuel pressure. You hook up a pressure gauge to it.

The fuel regulator is just that, a fuel filter/regulator. Just go to the parts store and ask for a filter regulator for a C6 Corvette. It is internally regulated for around 60PSI fuel pressure. There is no way to adjust this but that is what the LS3 runs on. I have seen 600HP with this setup and no real mods to it.

corvettedave383

thanks for that info, so that little cap is enough to stop fuel leaking out?

Iam in the uk, can you buy this sort of thing from summit?

cheers

dave

Gordonm

No that little cap is just that a cap. Keeps and dirt orgrime outvof the valve. There is a valve under the cap. Kind of like a bicycle tire valve that keeps the fuel from getting out. So leave the cap on to keep dirt out. I would imagine Summit has the proper fittings to put a pressure gauge in there.

corvettedave383

thanks alot for info, does summit do the c6 regulator/filter thing?, if i struggle to get it in the UK

cheers

dave

mffi115

Dave,

Have you checked out http://ls1tech.com/forums/ ? It's a forum for all types of ls conversions and I beleive there is a section cover what you're doing. It's a great site and not vette specific like here.

Also, check my blog on my conversion to see how I handled the fuel return. http://ls273stingray.blogspot.com/se...max-results=50 I use a '98 - '02 F-body (Camaro/Firebird) in tank fuel pump w/internal regulator, fuel lines are looped to return the fuel to the pump, and an in-line filter. It's very simple.

It's a set up designed by http://vetteworksonline.com/ .

72LS1Vette

Summit has this one: http://www.summitracing.com/parts/WIX-33737/

but the price seems pretty high. I bought one from NAPA and I don't think I paid anywhere near that much.



Rick B.

corvettedave383

many thanks guys

is there special fittings on that corvette filter/reg, what size are they, are they -an fittings?

cheers

dave

Solid LT1

Go to Ebay and there are C5/6 fuel filter set-ups there with the AN adapter fittings already attached for under $100. Street&Performance is a good web site for some photos of C2/3 Covette LS conversions. We used to have a great thread but, for some reason it was deleted and I think another should be started don't know why that original thread was deleted except there were lots of photos and some IDIOT probably just looked at the storage space it was using and kicked it out

Solid LT1

Go to Ebay and there are C5/6 fuel filter set-ups there with the AN adapter fittings already attached for under $100. Street&Performance is a good web site for some photos of C2/3 Covette LS conversions. We used to have a great thread but, for some reason it was deleted and I think another should be started don't know why that original thread was deleted except there were lots of photos and some IDIOT probably just looked at the storage space it was using and kicked it out

Sorry didn't see you were doing 4X4 conversion, LS1 Tech or Pirate 4X4 might be good places to look. Also try Power Block Television web site for Extreme 4X4 channel for some videos.

corvettedave383

cheers for info