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Old 03-15-2012, 05:11 PM   #1
softballnrd27
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2002 LQ4 swap, gas tank/fuel system questions. Please help

I am swapping a 2002 LQ4 into my 85 SWB. My Fuel system consists of an 87 TBI tank and sending unit, EP381 pump, Wix Corvette filter/regulator. I have already built and installed the feed and return from the tank to the filter. I need to know what to do with the 3rd line that is in the middle. Can I block it off completely or does it have to go somewhere? Emissions is not a concern at the present time.
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Old 03-15-2012, 05:54 PM   #2
thump16
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Re: 2002 LQ4 swap, gas tank/fuel system questions. Please help

Isnt that the vent line running to the gas cap tube assembly i am doing this install on saturday.
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Old 03-15-2012, 06:08 PM   #3
ls1nova71
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Re: 2002 LQ4 swap, gas tank/fuel system questions. Please help

The big one, the 3/4 inch one goes to the filler neck, the 3/8 is the feed, the 5/16 is the return and the 1/4 goes to the charcoal canister. Which one are you confused about?
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Old 03-15-2012, 06:57 PM   #4
softballnrd27
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Re: 2002 LQ4 swap, gas tank/fuel system questions. Please help

The smaller one on the sending unit, I should have clarified that. I don't have the charcoal canister anymore.
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Old 03-15-2012, 07:38 PM   #5
83_shortwide
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Re: 2002 LQ4 swap, gas tank/fuel system questions. Please help

Others Have Tried This
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'83 C10, LQ4, 4L80E
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Old 03-17-2012, 12:01 AM   #6
nacho55
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Re: 2002 LQ4 swap, gas tank/fuel system questions. Please help

Quote:
Originally Posted by 83_shortwide View Post
Those motorcycle breather vents are a good idea, I used a crank case vent filter.
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Old 03-17-2012, 10:30 PM   #7
softballnrd27
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Re: 2002 LQ4 swap, gas tank/fuel system questions. Please help

I ordered some motorcycle vents.
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