Gas tank year Differences, 73-81,-82-86,87 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

RustMaster87 · 06-23-2007, 08:04 PM

I have been flipping through the catalogs and have noticed that they list different gas tanks from 73-81, 82-86, and also 87. What is the difference in dimensions, length width, overall shape? I know they make different versions for gallon capacity, but are these tanks interchangeable? I ask this because I have the gas tank out of an 87 fuel injected truck, and a 1980 frame. I hope there is not a difference as I scored this tank for free.

I also have the 3 outlet fuel sending unit from the same tank that is in good working order, could I make this work with a carb?

ElGracho · 06-24-2007, 12:18 AM

73-81 have smaller filler necks than 82-86. 87 has a sump pan (like a little cake pan) under the sending unit to keep the fuel from sloshing away from the in-tank electric pump they used that year. The pan interferes with the float on earlier fuel senders.

The other dimensions didn't change between styles (but are different between the two sizes).

scotty101 · 06-24-2007, 09:57 AM

So can you use a tank out of a 82 and put it in a 87 with efi? or do you have to switch the pumps or will it not work?

RustMaster87 · 06-24-2007, 11:44 AM

Well it looks like I am going to have to buy a different fuel tank and sending unit. Not what I wanted to hear but hopefully I will be able to sell what I have. I was thinking about putting a fuel cell in the bed, guess I have some thinking to do.

**Captkaos** · 06-25-2007, 05:37 PM

Quote:

Originally Posted by scotty101

So can you use a tank out of a 82 and put it in a 87 with efi? or do you have to switch the pumps or will it not work?

You can use the 87 EFI sender in the '82 tank, but not the 82 sender in the 87 EFI tank. If you use the '82 tank you won't have the baffeling that was mentioned previously, the biggest negative is if you run the tank low it could stall because of uncovering of the sump.

BADAZ chevy guy · 04-17-2014, 12:10 PM

I've been talking here>>> http://67-72chevytrucks.com/vboard/s...d.php?t=625156 about tanks that I got when I bought a 1977 C10.
New question. Do the 16 gal and the 20 gal tanks mount with the same saddle mounts?

06-23-2007, 08:04 PM	#1
RustMaster87 Registered User Join Date: Jan 2007 Location: NH Posts: 25	Gas tank year Differences, 73-81,-82-86,87 I have been flipping through the catalogs and have noticed that they list different gas tanks from 73-81, 82-86, and also 87. What is the difference in dimensions, length width, overall shape? I know they make different versions for gallon capacity, but are these tanks interchangeable? I ask this because I have the gas tank out of an 87 fuel injected truck, and a 1980 frame. I hope there is not a difference as I scored this tank for free. I also have the 3 outlet fuel sending unit from the same tank that is in good working order, could I make this work with a carb? Last edited by RustMaster87; 06-23-2007 at 08:17 PM.

06-24-2007, 12:18 AM	#2
ElGracho Gentleman Jim Driver Join Date: Nov 2002 Location: Poulsbo, WA Posts: 1,551	Re: Gas tank year Differences, 73-81,-82-86,87 73-81 have smaller filler necks than 82-86. 87 has a sump pan (like a little cake pan) under the sending unit to keep the fuel from sloshing away from the in-tank electric pump they used that year. The pan interferes with the float on earlier fuel senders. The other dimensions didn't change between styles (but are different between the two sizes). __________________ Joe '75 GMC Gentleman Jim '84 Chev C10 Short Wide - Super duper plain (manual steering, manual brakes, no dome light, no cig lighter) '85 Chev C10 Short Wide - Super plain Vortec 4.8 4L60E trans also: '81 K30, '83 C30 Crew Dually, '84 M1028 CUCV, '85 M1009 CUCV, another '85 C10 SWB, '89 R3500 Flatbed

06-24-2007, 09:57 AM	#3
scotty101 Registered User Join Date: May 2007 Location: Edgerton MN Posts: 74	Re: Gas tank year Differences, 73-81,-82-86,87 So can you use a tank out of a 82 and put it in a 87 with efi? or do you have to switch the pumps or will it not work?

06-24-2007, 11:44 AM	#4
RustMaster87 Registered User Join Date: Jan 2007 Location: NH Posts: 25	Re: Gas tank year Differences, 73-81,-82-86,87 Well it looks like I am going to have to buy a different fuel tank and sending unit. Not what I wanted to hear but hopefully I will be able to sell what I have. I was thinking about putting a fuel cell in the bed, guess I have some thinking to do.

04-17-2014, 12:10 PM	#6
BADAZ chevy guy Registered User Join Date: Mar 2014 Location: Clearfield Utah Posts: 638	Re: Gas tank year Differences, 73-81,-82-86,87 I've been talking here>>> http://67-72chevytrucks.com/vboard/s...d.php?t=625156 about tanks that I got when I bought a 1977 C10. New question. Do the 16 gal and the 20 gal tanks mount with the same saddle mounts? __________________ My build thread. 1977 C10 short box. >>>> http://67-72chevytrucks.com/vboard/s...d.php?t=624182 700R4 build thread. >>> http://67-72chevytrucks.com/vboard/s...36#post6740236



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