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Old 07-02-2009, 08:37 PM   #1
1moretoy
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need help with 5.3 fuel system

i currently have an rci 16 gal fuel cell mounted between the frame rails and im going to do a 5.3 swap. seeing as money is tight right now and cannot afford a nice fuelcellguy tank, can i use a walbro 255 inline pump for now? if so im going to summit racing tomorrow and will pick one up(that place is awsome). what else do i need if anything. a friend told me these motors have a fuel reg allready. i will post some pics this weekend as soon as i get back home. thanks

Last edited by 1moretoy; 07-02-2009 at 08:39 PM.
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Old 07-02-2009, 08:58 PM   #2
novafrog
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Re: need help with 5.3 fuel system

as long ,as inlne pumps 65lbs,i used 100 lb pressure,you will need return line,just put 5.3 in nova
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Old 07-02-2009, 09:06 PM   #3
1moretoy
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Re: need help with 5.3 fuel system

can u explain your set up and what pump did you use
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Old 07-02-2009, 10:43 PM   #4
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Re: need help with 5.3 fuel system

i used a pump from jegs or summit,cost 89.00 i think, only one i could fine reasonable,had to buy sending unit that had return line,you got to have45-60lbs pressure to open injectors,once open you don't need but7 or 8 lbs to run,that where return comes in,if need more call me 304 385 4478 i will try to help
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Old 07-03-2009, 07:14 PM   #5
leatherhead63
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Re: need help with 5.3 fuel system

yes you can. That is what I use in my 72 with a 5.3. Works fine. I have a filter
before the pump and after the pump.
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Old 07-03-2009, 08:54 PM   #6
68 short step
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Re: need help with 5.3 fuel system

you'll need a constant (atleast) 45lbs of pressure......if its gets below 30lbs of pressure, you'll be able to idle and thats about it.....anything less then 45 you're gonna run into a lean condition...
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Old 07-06-2009, 12:34 PM   #7
tucnnuts
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Re: need help with 5.3 fuel system

i think the ls motors run on around 60 psi of pressure...i ran a part#e2000 pump from local autoparts, its a pump used on a ford, inline and i used the ls6 filter it has a return line built in ...comes on new vettes. i only had to run one main line and a short return ...works great..plus if the pump goes bad and can go get one at almost any part store...just my 2 cents
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Old 07-06-2009, 07:54 PM   #8
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Re: need help with 5.3 fuel system

heres the filter on ebay...http://cgi.ebay.com/ebaymotors/2002-...Q5fAccessories
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Old 07-06-2009, 10:27 PM   #9
1moretoy
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Re: need help with 5.3 fuel system

thank you. do u know who makes the pump?
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Old 07-06-2009, 10:35 PM   #10
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Re: need help with 5.3 fuel system

depends on which part store you go to ...i think its a part number e2000...its the same pump on like a 89 f150 i think...i know its a ford pump...
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Old 07-06-2009, 11:15 PM   #11
boostat4500
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Re: need help with 5.3 fuel system

I would recommend going with an aftermarket regulator. Will make future tuning and mods much easier. You want to start with about 49-50psi. Then if needed, you can turn up the pressure and re-tune, rather than change injector size, within reason of course.
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