Aftermarket Product ReviewProvide questions and answers about aftermarket parts for the Third Generation F-Body.
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Bought a new fuel tank from Rockauto.com for my 85. Spectra Preminum part# GM2721B. Filler neck was not welded in proper position and had to be heated and rebent to proper placement. Also tank is slightly oversized and had to be "massaged" in a couple of places to make fit. Filler neck also is not as ridged as OEM and bends down slightly when you put gas in it. All in all, a POS. Problem is no one else makes a tank for these cars(OEM) style. Finally got it in and using a new Walbro pump car now runs fine. Just a shame that a manufacturer cannot build something to fit that is a common part. Badman
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Sucks about the shitty quality. I've heard of people swapping in the plastic (99-02) tanks when doing LS1 swaps. That might be a better solution. Why were you looking into an aftermarket tank?
Thanks for the review. Now that I think about it, I'm probably due for a new tank too. I can push and pull on the fuel neck and it makes a clunking noise... That can't be normal
BADMAN, I know this is an old thread but I'm having the same problem with this piece of crap tank.
Just wanted to echo what you had said so others can know what to expect. I'm currently trying to figure out how to get the filler neck in the right spot.
The tank is in as far as it can go (with some massaging) but the filler neck is so far down I can't get the plastic cover back around it.
I'm gonna see if I can get someone around here to fix my stock tanks filler neck (yeah it was leaking) and if so, I'll put that one back in and run this piece of junk over! What a waist of money.
I actually found a OEM tank that was in perfect shape and pulled that POS and gave it away. I lost money on the deal too, hope people read this and learn like we did.
So let me get this straight, you put the Spectra tank in (with modification) and then later on you ripped it back out and put an OEM one back in? That's it, your now know as Madman. lol j/k
Ok so tell me with the OEM one that you put in, did you reinforce the neck or have it re-braised?
If I get the neck re-braised I'm thinking about trying to put some sort of strapping around the neck (maybe with some foam for vibration dampening and so it doesn't rattle) just so hopefully the braise doesn't crack again....
Yes otherwise there is not enough room. You don't have to totally remove the rearend you can leave the control arms connected just disconnect the brake line and the panhard bar and brace. This will allow you to lower the rearend enough to pull out and put back the fuel tank. Just an FYI Goodmark Industries makes a replacement fuel tank/ filler neck . I don't know what the quality or fit is but just thought I'd throw it out there.
The Goodmark tank is a Spectra with a black anti-corrosion finish on it. A POS with camo. I had to replace the Spectra due to the fact that the flimsy filler neck cracked after about 6 months. Not happy about doing the job twice. Bottom line: If you need a new gas tank,go on this board and ask for a used OEM. They are out there at reasonable cost.
P.S. I did not reinforce the filler neck on the OEM because it was good and strong,in fact you can pick up the tank by it and it will not bend. I can say it may be a good idea to reinforce,can't hurt.
I just pulled a Spectra tank from a parts car, the neck was in the right spot, it came out with no issues at all, and it's plenty strong. Tank still has several gallons of gas and I picked it up by the filler neck and it was not moving one bit.
Just my experience. Not saying they are good or bad.
Problem with OEM tanks is most are 17 years old and older.
__________________ 1988 IROC www.blk-wdw.com 14.3 @ 93 MPH
Own a Thirdgen? Live in New England? Check out the NECF website. www.NEC-F.org
Yeah I've read a few different posts on here about people replacing their gas tanks, and no one has said anything bad (other than us). I mean the spectra is the only one out their right now so they must have some that are good and some that are no good. Either that or all the good ones have been modified.
When I have the tank installed (straps are bolted on) the filler neck hits on the frame. There's a huge opening there but I'm not about ready to try and bend the neck for fear of breaking the braise. I have heard of people on here, heating up the neck and bending it though....
Ok, I test fitted the tank today, slid right in with no problem, get out from underneath the car and I could already tell the neck was way off, no way the door was going back on. Took the tank back out took it to my mechanic torched it and pulled it just a hair. Fits good now. So I hope thats it for that!!! The neck was alittle low
Last edited by 87bucketgta; 07-15-2009 at 03:53 PM.
Thanks man, Like I said just a test fit today, Im waiting on my pump so wont know for a while if everything comes together!! But after I torched it the neck was still alittle low but the black thing did go right over it and the door went right on. Ive been lurking on the board for awhile now just havent really posted much, Im at the gta source page mostly but been dead over there past 6 months!! www.fquick.com/87bucketgta
I haven't really read a lot about the LS1 tank but it sounds like it takes a different sending unit and the charcoal canister has some issues as well. There's some good threads about all of this but you'll have to do a quick search to find them.
