Click on image for the lowdown.
====
Forums66
Topics128,205
Posts1,057,425
Members48,471
Most Online14,466Apr 26th, 2026
AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
THANKS!
For helping keep this great
old truck web site
on the Internet for
over 30 years! and not clogged down Again, thanks!
Joined: Mar 2004
Posts: 6,236
'Bolter
'Bolter
Joined: Mar 2004
Posts: 6,236
Here's a couple pictures of the 21.5 gallon tank (available in the big trucks only) with measurements next to the 17.5 gallon tank.
Note, the filler neck on the 21.5 is different than the 17.5 neck and as would be expected the hold down straps are longer.
Both tanks are 52" long. The 21.5 is 14" tall, the 17.5 is 11" tall.
Mike B
Attachments
Last edited by Mike B; 08/13/2019 3:05 AM . Reason: added measurements
Joined: Jun 2011
Posts: 5,096
Crusing in the Passing Lane
Crusing in the Passing Lane
Joined: Jun 2011
Posts: 5,096
Mike, thanks, I'll look for one.
Joined: Jul 2018
Posts: 238
Rustbucket Ranch
Rustbucket Ranch
Joined: Jul 2018
Posts: 238
Thanks for the pics. My Spartan is missing its tank, I assume it was the 21.5 gallon one.
Joined: Sep 2011
Posts: 1,462
'Bolter
'Bolter
Joined: Sep 2011
Posts: 1,462
Thanks Mike, parted out a '59 C60 a few years back, need to shed a few parts that are taking up space, now I'll now how big a tank this one is.
Joined: Mar 2004
Posts: 6,236
'Bolter
'Bolter
Joined: Mar 2004
Posts: 6,236
The 17.5 gallon tank was standard issue on all 3000 thru 6000 Series Chevrolet Cab trucks.
The 21.5 gallon tank was standard issue on the 7000 Series and up Chevrolet Cab trucks.
Mike B
Joined: Feb 2001
Posts: 4,095
'Bolter
'Bolter
Joined: Feb 2001
Posts: 4,095
Auto Zone carries gas tanks but you will have to know the year you want.
Ron, The Computer Greek
I love therefore I am. 1954 3100 Chevy truck In the Gallery 2017 Buick Encore
See more pix 1960 MGA Roadster Sold 7/18/2017
Joined: Mar 2004
Posts: 6,236
'Bolter
'Bolter
Joined: Mar 2004
Posts: 6,236
Auto Zone carries gas tanks but you will have to know the year you want.
Yes, they carry the Spectra 18 gallon tank (17.5 gal replacement?), but I don't think the have the 21.5 gallon tank for the 55-59 Chevrolet big trucks.
Mike B
