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Gas Tank Replacement

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Old Jan 17, 2008 | 08:05 PM
  #1  
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Default Gas Tank Replacement

Need a replacement gas tank to fit my 1971 roadster. When checking specs and models a tank for the LT-1 is listed differently(GM33F). From what I can gather, this tank has no return line. Are there any other differences and is there an advantage or disadvantage to using this tank? Would like to get it right the first time. Who manufactures the best quality tanks and where are they available? Any info is appreciated.
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Old Jan 17, 2008 | 08:11 PM
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Check out Quanta Products in Maryland. I think their web site is "gastanks.com". They have the correct tanks with the original manufacturer's stamp. I bought mine there along with all of the tank accessories and they were all exact reproductions.
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Old Jan 17, 2008 | 08:51 PM
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Check out Quanta Products in Maryland. I think their web site is "gastanks.com". They have the correct tanks with the original manufacturer's stamp. I bought mine there along with all of the tank accessories and they were all exact reproductions.
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Old Jan 17, 2008 | 09:36 PM
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ttt
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Old Jan 18, 2008 | 04:24 PM
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i got mine from Ecklers for my 73 . they all advertise the tank as approx 24 gals but they are only 17gallons as was my original tank n the new one also.
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Old Jan 18, 2008 | 06:55 PM
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Originally Posted by rosslato
i got mine from Ecklers for my 73 . they all advertise the tank as approx 24 gals but they are only 17gallons as was my original tank n the new one also.
The capacity is related to the filler neck. 68-9 I believe use a filler that is flush with the top of the tank allowing you to completely fill it. 70-74 use a longer neck that forces air space at the top of the tank. Tank itself is the same dimensionally.
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Old Jan 18, 2008 | 08:00 PM
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Originally Posted by markdtn
The capacity is related to the filler neck. 68-9 I believe use a filler that is flush with the top of the tank allowing you to completely fill it. 70-74 use a longer neck that forces air space at the top of the tank. Tank itself is the same dimensionally.
u got me baffled, i fill my tank 1/2way up the filler neck which leaves no air bubbles which gets me 17gallons just like the original tank, i can't see 7gallons of air bubbles
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Old Jan 19, 2008 | 09:04 AM
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Originally Posted by rosslato
u got me baffled, i fill my tank 1/2way up the filler neck which leaves no air bubbles which gets me 17gallons just like the original tank, i can't see 7gallons of air bubbles
How do you know it is just 17 gallons? If you look at a 68-69 (vented)neck that bolts on it extends down into the top of the tank only a little bit. If you look at a 70-74 (nonvented) neck it goes in a few inches. The tank is physically the same size- and also with C2s as well I believe. The real differences in all of these tanks is how many return and vent ports (and check valve brackets) are included.
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Old Jan 19, 2008 | 09:11 AM
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Originally Posted by rosslato
i got mine from Ecklers for my 73 . they all advertise the tank as approx 24 gals but they are only 17gallons as was my original tank n the new one also.
Did the tank come with the bladder?
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Old Jan 19, 2008 | 11:44 AM
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Originally Posted by markdtn
How do you know it is just 17 gallons? If you look at a 68-69 (vented)neck that bolts on it extends down into the top of the tank only a little bit. If you look at a 70-74 (nonvented) neck it goes in a few inches. The tank is physically the same size- and also with C2s as well I believe. The real differences in all of these tanks is how many return and vent ports (and check valve brackets) are included.
i know it's 17 cuz i poured 1gallon of gas into the tank n then drove 1/2 a mile to the gas station n proceded to put 16 more gallons to the top of the neck!
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Old Jan 19, 2008 | 11:45 AM
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Originally Posted by Jud Chapin
Did the tank come with the bladder?
no bladder, heres my tank w/2 vent tubes i just plugged n use a vented gas cap.

Last edited by rosslato; Jan 19, 2008 at 11:47 AM. Reason: to add
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Old Jan 19, 2008 | 03:43 PM
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Originally Posted by rosslato
no bladder, heres my tank w/2 vent tubes i just plugged n use a vented gas cap.
Thanks! Nice paint job.
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Old Jan 19, 2008 | 04:03 PM
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Default Hijacked!

So could one of you tank guru's answer the original question.
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Old Jan 19, 2008 | 04:28 PM
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Originally Posted by willem wallace
Need a replacement gas tank to fit my 1971 roadster. When checking specs and models a tank for the LT-1 is listed differently(GM33F). From what I can gather, this tank has no return line. Are there any other differences and is there an advantage or disadvantage to using this tank? Would like to get it right the first time. Who manufactures the best quality tanks and where are they available? Any info is appreciated.
LT1's did not use a return line.
Heres where I got mine and I this is the one you need:
http://www.quantaproducts.com/prodin...?number=GM-33F
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Old Jan 21, 2008 | 01:04 PM
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Originally Posted by willem wallace
So could one of you tank guru's answer the original question.
To my knowledge there are no dimensional differences in tanks 68-74 (maybe C2 too?). If you don't use return and vent ports any will work. Quanta gets bantered about a lot, they have a good reputation.
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