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Joined: Oct 2003
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Hi there,

I bought a new tank for my 69 and it does not have the vent tube attached like the old one. I am planning to remove the old tube from the old tank, and affix it to the new tank. Just wondering if anyone has done this and how they did it. Brazed, or welded, soldered???

It's a big pain in the arce, but I am not overly excited to change to a vented cap as I don't know if they vent both ways (vacuum and pressure)?

Has anyone done this?

Thanks.


1969 Firebird conv't A/C 400 4-Speed
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Would you like a copy of the 69 Service Manual in PDF format?

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They were originally soldered

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Gus68, yes I would - I may have one already but the copy is poor.

Bob S. thanks, I did solder my old tube onto the new tank. All went well.


1969 Firebird conv't A/C 400 4-Speed
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Interesting. Someone had replaced the tank in my '69 (which is the type which has the vent tube going in and out of the trunk) with a repo tank. Except they didn't change the non-vented cap. It didn't fit tight so I replaced it with a vented cap and no more fuel leakage.

Last edited by Ponton; 09/02/18 09:01 PM.

1969 350 Firebird that needs a lot of help.
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Yes, mine was welded onto my new tank looks like it is all good but haven't used it yet as car is still at body shop.

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Ponton, I found out the new tanks don't have the same depth at the neck to hold the cap so the old caps don't fit correctly (the rollover area inside the neck). What I did was I have some rubber pads that are resistant to fuel about 1/16" thick from my previous employer (molding business). I cut out two rings to fit in the cap, and now viola, the old "not vented" cap works like a charm.


1969 Firebird conv't A/C 400 4-Speed

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