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2001 6.0L fuel rail ?

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Old Mar 13, 2010 | 03:22 PM
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Default 2001 6.0L fuel rail ?

I have a 2001 6.0 LQ4 that I want to change my fuel rail. My current rail has the inlet and return lines, I would like to change it so I just have a feed line so I can use a Warbro pump wit vette filter reg. Does anyone know what year or what engine will fit the stock intake and have no return line. I am trying to go the least expensive way possible so I do not want any custom aftermarket rails. Any help or ideals would be great.
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Old Mar 13, 2010 | 06:42 PM
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Originally Posted by millwright1999
I have a 2001 6.0 LQ4 that I want to change my fuel rail. My current rail has the inlet and return lines, I would like to change it so I just have a feed line so I can use a Warbro pump wit vette filter reg. Does anyone know what year or what engine will fit the stock intake and have no return line. I am trying to go the least expensive way possible so I do not want any custom aftermarket rails. Any help or ideals would be great.
Depends if you are using the stock truck intake or switching to a car intake and injectors.
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Old Mar 13, 2010 | 07:43 PM
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I'm pretty sure 2004 is when the trucks all went to the single fuel line, so anything newer than that should be what you're looking for.
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Old Mar 13, 2010 | 08:02 PM
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Originally Posted by millwright1999
I have a 2001 6.0 LQ4 that I want to change my fuel rail. My current rail has the inlet and return lines, I would like to change it so I just have a feed line so I can use a Warbro pump wit vette filter reg. Does anyone know what year or what engine will fit the stock intake and have no return line. I am trying to go the least expensive way possible so I do not want any custom aftermarket rails. Any help or ideals would be great.
I have a 2006 4.8 truck engine with the single fuel rail and I want one with the return line.. does anyone know if they will interchange?
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Old Mar 13, 2010 | 08:04 PM
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to answer both questions....yes they will interchange...and 2004 up trucks should be returnless
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Old Mar 13, 2010 | 08:05 PM
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Originally Posted by 04600rr
to answer both questions....yes they will interchange...and 2004 up trucks should be returnless


If Millwright1999 wants to swap, Im happy to do so.
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Old Mar 13, 2010 | 10:06 PM
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Originally Posted by gofastwclass
Depends if you are using the stock truck intake or switching to a car intake and injectors.
Yes I want to keep the stock truck intake.
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Old Mar 13, 2010 | 10:08 PM
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Originally Posted by thedrill
If Millwright1999 wants to swap, Im happy to do so.
I might be interested in a trade, PM me.
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When swapping from return to returnless or vice versa do you have to do anything else? Do you need a retune or anything? I want to go to a returnless setup on my truck intake.
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Old Sep 18, 2010 | 02:50 PM
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Originally Posted by chuckd71
When swapping from return to returnless or vice versa do you have to do anything else? Do you need a retune or anything? I want to go to a returnless setup on my truck intake.
why do you want to go that way?
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Old Sep 18, 2010 | 04:33 PM
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Right now I have an 02 truck setup, but I have found a rails/injectors setup from an 8.1 that I would like use. I would also prefer to just have to run the one hard line up and down the car. It's not a 'must do' thing, it would just simplify things a bit.
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Old Sep 20, 2010 | 08:20 AM
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I have an '04 Yukon with a 5.3, and an '04 6.0 from a 2500 truck, both have the return-style fuel rails. The returnless rails are a direct fit, but I'm thinking it's more like 05+. I just put mine on the 6.0 for the same reason:

70 micron pre-filter -> walbro pump -> corvette style filter/requlator, and only one line going up to the fuel rail.
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Old Sep 20, 2010 | 03:55 PM
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That's what I want to do, I just wasn't sure what parts of the fuel system the computer sees or if you could just swap rails at will.
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