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G3GM 1973 to 1977 A-bodys. Chevelles, Monte Carlos, El Caminos, Laguna, 442, Cutlass, Malibu, GTO, LeMans, Century, Regal, Grand Am, Grand Prix, Sprint, Gran Sport, Can Am, Hurst-olds, and other 73-77 A-bodies


Fuel Tank Interchange

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77ElClassic
JB2wheeler
1973 454 MONTE
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G3GM :: G3 Tech :: Part interchangeability

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Fuel Tank Interchange Empty Fuel Tank Interchange

Post by gto364cid Fri Aug 24, 2012 12:33 am

Hi, would 68-72 A-body or 77-96 B-body fuel tanks fit on a 73-77?

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Fuel Tank Interchange Empty Re: Fuel Tank Interchange

Post by JiMi_DRiX Fri Aug 24, 2012 1:43 am

I'm not sure, since the 73 Monte tank is different from 74-77, I'm sure same goes for other A-bodies as well. New tanks run about $150 or so, I'm about to drop one out of a 75 Monte to check it for gunked up old fuel.
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Fuel Tank Interchange Empty Re: Fuel Tank Interchange

Post by Mcarlo77 Fri Aug 24, 2012 9:21 am

[quote="JiMi_DRiX"]I'm not sure, since the 73 Monte tank is different from 74-77, I'm sure same goes for other A-bodies as well.

It may not even be that simple. My Hollander Interchange manual shows the same tank for '71/'72, but a different tank for every year of Monte Carlo '73 thru '75; with '76/'77 sharing the same one. Pretty much the same story with Chevelles/Malibus with El Caminos and station wagons having different tanks, yet. For Cutlass and Century, they even differentiate between 2-dr and 4-drs during the '76/'77 model year. Haven't the slightest idea what the differences would be; other than maybe capacity and perhaps the baffle (or, lack thereof) inside the filler neck.

Hollander book I have only goes to '81 and they list different tanks than any of the "A" bodies for the various "G" bodies.
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Fuel Tank Interchange Empty Re: Fuel Tank Interchange

Post by 1973 454 MONTE Fri Aug 24, 2012 12:41 pm

the tank (without fill neck) it self is the same 73-77. (PER MONTES)
73 neck is by itself.

74 neck has a big filler hole (reg gas).

75 is the same neck as 74 but has a small filler hole (unleaded gas) with a flapper door.

76 and 77 are the same necks with small hole (unleaded gas) and have filler flapper doors.

reg gas nozzles were about an inch wide.
un-lead gas nozzles are about 3/4. (size we have today)
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Fuel Tank Interchange Empty Re: Fuel Tank Interchange

Post by JB2wheeler Sat Aug 25, 2012 6:41 pm

Is there any way to siphon out the gas in a 74 model thru the filler neck? I tried running a rubber hose down the neck to get out old gas, but could not get it down the filler neck for some reason. I wish my tank had a petcock on the bottom so it w3ould be easy to drain out the gas. JB
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Fuel Tank Interchange Empty Re: Fuel Tank Interchange

Post by 77ElClassic Sat Aug 25, 2012 8:16 pm

You should be able to siphon thru the neck, but if not - as easy as these tanks are to drop (barring rusty bolts), you can drop the tank using a jack, then siphon from the top once the sending unit is removed. Tranny jack works real nice.
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Fuel Tank Interchange Empty Re: Fuel Tank Interchange

Post by Jedediah Sun Sep 23, 2012 11:27 pm

Is there any hardware availible for the tank straps? Or should I just throw in some nuts and bolts?
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Fuel Tank Interchange Empty Re: Fuel Tank Interchange

Post by JiMi_DRiX Thu Sep 27, 2012 2:10 pm

Jedediah wrote:Is there any hardware availible for the tank straps? Or should I just throw in some nuts and bolts?

Its basic hardware, you can most likely find the same stuff or suitable replacements at an Ace Hardware.
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Fuel Tank Interchange Empty Re: Fuel Tank Interchange

Post by davesr_7 Tue Oct 23, 2012 9:26 am

looking for supports that mount to under carrage

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Fuel Tank Interchange Empty Re: Fuel Tank Interchange

Post by Mcarlo77 Tue Oct 23, 2012 10:08 am

Are you talking about the two rear mtg brackets that the straps connect to? Probably just as easy to fabricate a couple.
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Fuel Tank Interchange Empty Re: Fuel Tank Interchange

Post by davesr_7 Tue Oct 23, 2012 2:49 pm

just thought i would ask will make 2 outt of hat chanenl or stop sign post lol

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