FastKat

iTrader: (10)

I did some searching but I can't seem to find a thread that squarely addresses this...

Will an LS4 fuel rail mount up to an LS1/LS6 intake manifold? Is the bolt pattern and injector location the same?

From what I understand, the LS4 injectors are a little shorter, so I might need to raise the LS4 rail up a little bit using shims... or I could get some shorter LS4 injectors.

Any info will help!

neilownz

I believe it needs to be bent a little and/or the plastic needs to be sanded some. Or you can cut out a section of the middle and replace it with some -6 an hose and fittings. Or you can use a different fuel rail.

FastKat

iTrader: (10)

Thanks for the info. I found a writeup from a Grand Prix forum and it sounds like the mounts need bent and the rail needs shimmed to increase its height.

neilownz

There is more than one way to make it work, but it is not a direct fit.