Are the fuel rails the same?

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Dec 25, 2010 | 10:51 PM

jalper

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Are the fuel rails the same?

I have a ly6, and i want to rune the ls3 intake or the Truck intake, it is on a aftermarket EFI, so the injectors will not be a stock injector, My question is can I use a aftermarket ls1 fuel rail on a ls3.

basically what i am looking for is - are the spacing and the angle of the injector the same?

I know the mounting is different but i can fabricate all the small stuff, mostly concerned about the spacing from one injector to another and the angle that the injector sits at.

Dec 28, 2010 | 07:14 AM

Roar

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I'll let you know in a few hours.

I was wondering the same thing, but just received my LS3 intake and have a set of aftermarket fuels rails at home so I am going to check tonight.

Dec 28, 2010 | 07:41 AM

SweetS10V8

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Quote:

Originally Posted by jalper

My question is can I use a aftermarket ls1 fuel rail on a ls3.

Not without custom mounts. LS1 injectors are the longest, LS3 injectors are the shortest.

Dec 28, 2010 | 11:11 AM

Roar

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Spacing and angle is the same for the injectors, but rail mounting is in a different location.
No big deal, just need to make some custom brackets.

Dec 28, 2010 | 11:42 AM

Sales4@Texas-Speed

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You will probably need a different bracket to mount the fuel rail. LS1 fuel rails will typically mount higher off the intake because of the taller injectors.