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fuel tank sump...some questions

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Old Aug 19, 2008 | 09:04 PM
  #1  
irishhockey34's Avatar
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From: Plymouth Twp. PA
Car: 92RS
Engine: LQ4
Transmission: 4L80E
Axle/Gears: 3.23
fuel tank sump...some questions

I'm considering doing a fuel tank sump on my '92 RS. I just have a few questions about the process:

1. If i sumped my tank on my TBI setup, would I have to run a special fuel pump for the nesseccary fuel pressure the TBI needs?

2. What size bungs would you reccommend, 3/8" or 1/2"?

3. Would I have to connect to the existing fuel lines or could I run all new lines?
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Old Aug 19, 2008 | 09:40 PM
  #2  
xpndbl3's Avatar
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From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: fuel tank sump...some questions

no reason to waste your time if you're running a TBI setup. Pull the tank and put in a walbro 255 pump and it'll be more than enough for any tbi setup.
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Old Aug 19, 2008 | 10:14 PM
  #3  
irishhockey34's Avatar
Thread Starter
Senior Member
15 Year Member
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Joined: Jun 2006
Posts: 525
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From: Plymouth Twp. PA
Car: 92RS
Engine: LQ4
Transmission: 4L80E
Axle/Gears: 3.23
Re: fuel tank sump...some questions

good point. planning on a pretty solid LT1 build in the future though.
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