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Fuel rail mod for TBSS intake


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Does anyone know Somewhere that I can send my spare fuel rail crossover to have -AN fittings welded on for the TBSS intake? I don't really trust many general welding shops around unless they have done something like this before. The crossover isn't perfectly round and I'll be pissed if it leaks when put together. I know some of you have done this mod and they look great.

Also, should I steal the 87mm TB off my TBSS and put the LS3 gold on the TBSS or use the 90mm gold with the x-link (4.0) on the SSS?

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No one, really? Well I guess I'll talk to some in-town speed shops. There's some really reputable shops locally but I just like dealing with LSX people. Golen is in my town so I'll start with him.

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My crossover was modified to fit the oem return style rails / tbss intake manifold by a local radiator, a/c auto/truck repair shop. I can't remember if they soldered or welded the fittings.

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Not sure about the aftermarket rails. If I go to a 07+ returnless fuel rail, I'll have to get a tune. The vette regulator/filter needed to go returnless is set to a different fuel pressure. It's easy enough to just use the modified stock rail, as long as I can find someone weld on the fittings.

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  • 2 weeks later...

I had to trim my mounting tabs a little and for the crossover I installed the tube onto one side and cut it right after the bend on the passenger side. I had the crossover tube from the new intake so I cut a section from it and had a buddy that welds for a living weld it in. So far no leaks or issues.

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  • 1 month later...

Well I finally have my fuel line being modified. Tonight I was just trying to make sure I have everything I need for the swap and just getting a plan together. I decided to unplug the stock throttle body (78mm) and plug in the 90mm LS3 Throttle body that I got off eBay using the v4 X-link just to be sure everything works. But of course it didn't, setting codes P0120, P0220, and P1516 at key on. I obviously didn't start the engine because I had the 90mm just resting in the radiator support. I tried several times and also tried to use the throttle with the ignition on but got no throttle plate movement and reduced engine power on IPC. Anyone seen this before?

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Did the connectors click as you hooked them up? And this is the latest x link?

 

If all is connected you should get full blade movement with the ignition on/engine off, wait till you get the whole thing put together and start it up to see if you get any throttle response. Its has to be something from x link to harness, double check the harness/wires.

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I only unplugged my stock TB which is still on the truck, plugged in the x-link, then plugged in the LS3 TB. As soon as I turn key to "on," I get reduced engine power and the three codes. Tried to unplug and plug back in several times with same result. All connections are tight and it's the latest x-link V4. Everything goes back to normal once I remove the x-link and plug my stock TB back in.

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My truck was one of the odd, extra fussy kind like yours. I had trouble with the 3.0 version...Grant @ Torque Rush Performance sent me a tweaked 4.5 version X-Link design.

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