Fuel Return Lines
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Junior Member
Joined: Jan 2002
Posts: 19
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From: Canonsburg, PA
Car: 82 Z28 Indy Pace Car
Engine: 350
Transmission: 4L60
Fuel Return Lines
I'm putting a 350 w/ carb into my 82 Z28. My question is, what do I do with the fuel return lines. I plan on using a Holley blue elec. fuel pump w/reg. There are 4 lines that come from the fuel sending unit. One supply line, one that goes to the small plastic vent by the tank and 2 others. Is there a safe way to bypass the return lines, should I just plug them up? Any help is appreciated.
Supreme Member
Joined: Aug 1999
Posts: 1,443
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From: College Station, Tex USA
Car: 89rs
Engine: 400Sb
Transmission: Tremec 3550
they can be left open.. but its an evaporation point
I used the return line for a second delivery line but it did not help much.. just aireated the fuel. I will be plugging it probably.
Supreme Member
Joined: Jul 1999
Posts: 18,457
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From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
One of those 2 is the return line; the other is the vent, goes to the canister.
If your pump has a return, hook it to the return; otherwise plug it.
You need some kind of a vent. Either use the canister; or take one of those little bronze fuel filters, and stick it on the end of the rubber hose that would go to the canister.
If your pump has a return, hook it to the return; otherwise plug it.
You need some kind of a vent. Either use the canister; or take one of those little bronze fuel filters, and stick it on the end of the rubber hose that would go to the canister.
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