_GTO_

Hey guys,


I'm a little confused about the Fast 102 setup on LS1 , I already have an OEM LS2 fuel rail and fast 36 (ls1) injectors , I know the ls1 injector is tall and I’ll have to get a spacer for the rails but the question is , will the (ls1) injectors fit the ls2 rail directly ? What other things I might need?

Thanks.

_GTO_

Anyone ??

Unertl42

iTrader: (63)

no, LS2 injectors are shorter, and have a different plug. The rail won't sit on the intake so you can bolt it down. There is an adapter kit to make it work, I can't remember who sells it, but the magic Google knows

Unertl42

iTrader: (63)

****, I just re-read your post. You should be good, you have the adapter kit, and other than that, it should be plug and play

DBShocker

^he ment crap, not **** lol

SweetS10V8

iTrader: (4)

You need;

Lower orings (comes with 146302 manifold)
Spacers (between fuel rails and manifold)
Bolts (for fuel rail/spacer/manifold)
Washers

Your basically making a 146021-KIT but using your own fuel rails. Call FAST and get the extra parts. They have them already.

themealonwheels

iTrader: (20)

Hey bud, you may remember you answered someone in the fueling section on this site on this topic... I replied that I thought my LS1 lower o-rings would work? Well turns out you were right and I found the correct o-rings in the box with the manifold. So stock LS1 lower o-rings work on a Typhoon, but NOT the FAST (just for clarification)!

On the LS1 injector on the LS2 rails, shouldn't we convert to an LS2 top o-ring? I asked for 06 GTO top o-rings at the parts store, and they are definitely beefier. I test fitted them in my LS2 fuel rail, and they fit well, haven't tested the LS1 o-rings in the LS2 rail... thoughts?

SweetS10V8

iTrader: (4)

Ive run the LS1 style injectors in the LS2 rails, without swapping the upper oring, a ton of times.

Never had a failure.

_GTO_

So , The lower o ring are coming with the intake and I can use the upper ls1 o ring with ls2 fuel rail .

All I need now is the Bolts and spacers .

Thank you very much your help SweetS10V8 .

SweetS10V8

iTrader: (4)

And lock washers.... Your welcome!!!

Oh yeah, the orings only come with the cathedral port intake #146302. So if you did an LS3 head swap, and planning on using the LS3 FAST #146102, youll need to order the orings seperate as well.

_GTO_

I'll get the cathedral ports intake and not planning to switch to rectangular ports .

Cathedral port heads FTW

Thanx again .

barracuda_440

What about for those of us that did not get the Orings with our used fast 102 intake. I was told the lower orings from a 94-95 5.0 mustang work on the ls1 injector and the 102 intake

Violatorno1

iTrader: (3)

This is a good question. Does anyone have a part number or know exact make/model/yr of car to order a set for? About to get my setup installed but need lower o-rings.

JIMS SVT

iTrader: (3)

Anyone figure this out?

sick_ss camaro

I am about ready to install my fast 102 intake on my ls1 and am in need of the same information about lower o'rings needed for ls1 injectors? Anyone?

themealonwheels

iTrader: (20)

7mmx4mm for lower orings. I have spares, pm me if you need a set

sick_ss camaro

I would like a set of these lower injector o-rings and spacers if I need them. I'm new to the page I do not know how to message sorry for inconvenience

sick_ss camaro

Ok so thanks for the info and sending me the lower o rings .I attempted to mount fuel rails on the intake and apparently need the spacers as well as I stated in earlier post.. I assumed I was getting the spacers as well ..so can I get some help with the spacers.please

themealonwheels

iTrader: (20)

If you need the spacers to supplement the orings, shoot me back a pm and we can work out a price

sick_ss camaro

I tried to send a message again not sure why its not going through ...but as I stated in my earlier post I was looking for the ( o rings and the spacers ) im not sure what the problem was with the communication but didn't get what I needed now I am more than frustrated trying to put this together without having what I need.