genxhunter

I'm doing a TBSS/NNBS intake swap (pn 25383922) on my 03 escalade ext LQ9 6.0. I have done a similar swap before but it was on a newer model truck (06 model). This truck uses a fuel rail with a regulator on it and return line. I am having the intake ported right now but have not found a fuel rail that will be tall enough to clear the new style 87mm intake. I already have the TB on my current intake using an X-link and an adapter plate (3 bolt to 4 bolt). Does anyone make a fuel rail that will work or do I have to resort to modifying my original one? Are there any other things I need to consider with this swap? What about taller injectors with the same connector? Any help would be greatly appreciated.

Tim94gt

iTrader: (1)

You can use the TBSS/NNBS rail with a corvette fuel filter. The vette filter has an internal regulator and works with return style fuel systems.

https://www.performancetrucks.net/fo...ll-nbs-493269/

genxhunter

Thanks for the response. Do you know the part number of the corvette filter? Does it regulate the fuel pressure to the same as the 03 LQ9? I know the 06 and newer GM trucks run at a little higher fuel pressure. Just wondering if it would be beneficial to bump mine up?

Tim94gt

iTrader: (1)

Not sure on the pressure, it's probably the same or slightly higher than stock. Not something I'd worry about though.

GM Part # 19239926

1FastBrick

iTrader: (17)

It's regulated at 58 PSI.

genxhunter

That works for me. Thanks for the info.

Wolftrk99

iTrader: (5)

Wix makes the filter 33737 is their pn

Wolftrk99

iTrader: (5)

I have 58psi at idle at fuel test port after the filter/regulator......

Wolftrk99

iTrader: (5)

An idea on how to connect it

GMCtrk

iTrader: (27)

you can seriously have hooked up that rubber hose like that