Re: 69 camaro - GM gas tank vs repo
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lynn</div><div class="ubbcode-body">FWIW, the newer Spectre tanks fit perfectly, and they are pretty cheap from Rock Auto. </div></div>

Lynn,
I've gotten several tanks from Quanta. Are their's manufactured by Spectre? The Quanta tanks look and fit great. The only problem I've had is the OEM cap is a bear to get on and off.

Dave

Re: 69 camaro - GM gas tank vs repo
 

20 R looks like a aftermarket part #. look at a classic ind. or spectre, quanta part numbers.

Re: 69 camaro - GM gas tank vs repo
 

Eddie,
I took those pictures to compare the assembly-line GM tank with a reproduction. Having reviewed the details, I'm not so sure that your tank is repro..... could well be over-the-counter.

Here's the differences that I noted (the GM tank is dated '21 69' and it came off a January car, 01B if I recall correctly).

1. Original GM has a 1&quot; wide collar at the filler inlet, the repro is 1/2&quot;.
GM:
http://i1218.photobucket.com/albums/...ps2471f5e7.jpg
Repro:
http://i1218.photobucket.com/albums/...psa441f6ee.jpg

2. The rebates for the gas cap in the filler neck have different orientations, at approximately 11- and 5-o'clock on the GM tank, and at the 9- and 3-o'clock position on the repro.
GM:
http://i1218.photobucket.com/albums/...ps67c62cbf.jpg
Repro:
http://i1218.photobucket.com/albums/...ps6b61d89d.jpg

3. The locking ring for the sender has a number ('16 9') on the GM tank, and nothing on the repro; also, the spot welds either side of the 3 locking tabs are much smaller on the GM tank than on the repro.
GM:
http://i1218.photobucket.com/albums/...ps79b3946a.jpg
Repro:
http://i1218.photobucket.com/albums/...psd479a35e.jpg

4. On each side of the GM tank, the joint seam has a transition from horizontal to almost vertical, approximately half way along the tank edge; the repro seam is flat along the entire length.
GM:
http://i1218.photobucket.com/albums/...ps67183439.jpg
Repro:
http://i1218.photobucket.com/albums/...ps9407c567.jpg

5. The perimeter seam has a different appearance, the GM tank has what looks like fish scales, like a weld run, but the repro has like a crimped appearance with a regular series of perpendicular 'ribs'.
GM (probably should have cleaned the tank to better show this detail...):
http://i1218.photobucket.com/albums/...ps9844ca5c.jpg
Repro:
http://i1218.photobucket.com/albums/...ps85875287.jpg

Re: 69 camaro - GM gas tank vs repo
 

Tim, excellent pics and details - let me compare mine to see what I have.

Thank you for taking the time to investigate this

Re: 69 camaro - GM gas tank vs repo
 

Ed,
With the limited pics of your tank I would still have to say thats its a GM NOS tank.

Re: 69 camaro - GM gas tank vs repo
 

Eddie
I'm coming into this late
If you need any more Picts of NOS or used GM tanks
Just let me know
Great post and very good info!
Regards
Fred

Re: 69 camaro - GM gas tank vs repo
 

here are some updated pics of the tank....they are similar to Tims pics

https://www.yenko.net/ubbthreads/pics...2-img_1945.jpg
https://www.yenko.net/ubbthreads/pics...3-img_1947.jpg
https://www.yenko.net/ubbthreads/pics...4-img_1950.jpg
https://www.yenko.net/ubbthreads/pics...5-img_1951.jpg

Like I thought earlier - this might be NOS tank over the counter as the guy I bought the load of parts from worked at
the GM dealer parts counter and he bought a bunch of parts for this Z28. I was considering using this as I already have it, but I do like the repo tanks finish - this would take me hrs to try to remove yrs of scratches that this has been subject to so for the money - it was/is a consideration. How do you all clean these nos tanks up? Use any metal polish on them?

Re: 69 camaro - GM gas tank vs repo
 

If I had that tank I would sponge sand the entire tank by hand to take all scratches along with light surface rust off, then give it a light spray of clear coat to protect it.
I did an original used 70 Chevelle Gas tank once with paint over spray, tar, scratches and surface rust on it and it came out great after I cleaned it up. [img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img]
This one will be a lot easier to do IMO

Re: 69 camaro - GM gas tank vs repo
 

what is sponge sand??

Re: 69 camaro - GM gas tank vs repo
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: enio45</div><div class="ubbcode-body">what is sponge sand?? </div></div>
Its a sponge with sand paper built in on one side of the sponge.
I buy them at swap meets and there cheap.
I use them for sanding lots of parts and you can buy them in many different grades of sand paper