Fuel Rail / Injector interchangeability

[ryan.hess]

I have a line on some '94 injectors and the fuel rail....... In case I need to swap mine out, will the rail fit a 93GTP? Or are at least the injectors interchangeable??? I need to know ASAP, so if someone could look those up that would be great. Thanks!!

Ryan

[ryan.hess]

hmm... gmparts direct says they're different injectors... 17104256 and 17090849... different flow rates? any idea?

[Juglenaut]

1993 = MFI
1994 = SFI

1994/95 is the first generation SFI.

Yes slightly different flow rates I would believe.

[ryan.hess]

Okay, new question: what new(er) injector is compatible with my 93? I'd like to get something from a 94-98 in the local junkyard if possible. I've heard that the 94GTP's injectors were also quiet, which is an added bonus. Anyone here know what will work?

[brian89gp]

The fuel rails are different, I'm not sure if they are interchangeable. No idea if the injectors are the same, though a lot of the quietness comes from the fact that only 1 is firing at any time, not all 6 at once.

[sd_iconoclast]

I just had two sets of injectors cleaned and flow tested at Cruzin Performance. One set came from a '95 Lumina Z34 (Model #17090844). One came from a '92 Lumina Z34 (Model # 17103509). By model #, I mean the number that is printed on the injectors. Cruzin Performance gave me a printout of flow specs before and after they rebuilt these things. From the data, they appear identical. The guy there told me that they were interchangable too.
By the way, I really recommend Cruzin Performance. They reconditioned and flow tested my injectors for $11 each. Their website is www.cruzinperfomance.com