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 Post subject: 79 Malibu Fuel Lines
 Post Posted: Thu Dec 14, 2017 9:36 am 
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Joined: Tue Dec 12, 2017 11:22 pm
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We are installing a 383 with a holley carb and mechanical pump in a 79 Malibu. There is a 3/8 line and a smaller line coming from the tank. Is the smaller one supposed to be a return line or a vent?

Thanks!
Kevin
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 Post subject: Re: 79 Malibu Fuel Lines
 Post Posted: Thu Dec 14, 2017 6:46 pm 
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MalibuRacing Junkie
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Joined: Sun Jul 06, 2003 8:49 am
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Location: Socialist NY
If there is a smaller one right next to it, it should be a return.

If the smaller one is on the drivers side it is a vent.

Factory V6 cars 2 lines supply and vent

Factory V8 cars 3 lines supply, return and vent.

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1980 Malibu BBC T-56 9"
1986 Oldsmobile Cutlass.
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 Post subject: Re: 79 Malibu Fuel Lines
 Post Posted: Fri Dec 15, 2017 3:44 pm 
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Thanks for the reply. There are only 2 lines total from the tank. The smaller is on the drivers side. So must have been a factory V6 car.

So two more questions:

Do I need to run a system with a return on this V8 or is that just if I have issues with vapor lock?

Also, what would it vent into in the engine compartment? A charcoal canister?

Thanks!
Kevin


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 Post subject: Re: 79 Malibu Fuel Lines
 Post Posted: Fri Dec 15, 2017 9:02 pm 
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MalibuRacing Junkie
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Vent went to the charcoal canister

And you should be fine without a return.

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1980 Malibu BBC T-56 9"
1986 Oldsmobile Cutlass.
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