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Old 09-24-2009, 05:45 PM   #1
kenm78
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Fuel tank size??

I have a 1980 C10 LWB (Big Ten) Model 350. I can not find how big my fuel tank is. I am assuming it is 20 gallons since I have stuck 18 in it before. Do our trucks only come with a 20 gallon tank or is it bigger? I have a single tank.
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Old 09-24-2009, 05:49 PM   #2
Prerunner1982
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Re: Fuel tank size??

I believe the options were 16 gal or 20 gal.

My 82 Chevy and 87 GMC both had dual 16 gal tanks.
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Old 09-24-2009, 05:52 PM   #3
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Re: Fuel tank size??

16 gallons for short beds, 20 gallons for long beds, and 25 gallons rear mount.
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Old 09-24-2009, 05:59 PM   #4
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Re: Fuel tank size??

10-4 Thanks
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Old 09-24-2009, 06:01 PM   #5
Prerunner1982
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Re: Fuel tank size??

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Originally Posted by glock35ipsc View Post
16 gallons for short beds, 20 gallons for long beds, and 25 gallons rear mount.
Both of mine were longbeds...

Maybe I just never let them get low enough but I am pretty sure they are 16 gal. Maybe dual tanks had the 16s even if they were long beds?
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Old 09-24-2009, 07:29 PM   #6
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Re: Fuel tank size??

Most longbed dual tank trucks were 20 gallon tank trucks, but some were 16 as in the case of my old 86 C-10, it was a longbed with twin 16's.
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Old 09-24-2009, 08:09 PM   #7
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Re: Fuel tank size??

if the tank doesnt go all the way back to almost the rear wheel its prolly a 16 gal
the rusted tank is 16 gal the shiny one is 20 gals
you can have 16 gal tanks on longbeds or shortbeds... i dont think you can physically fit a 20 gal tank on a shortbed... ive never owned a shorty
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Old 10-16-2009, 12:02 PM   #8
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Re: Fuel tank size??

Quote:
Originally Posted by Prerunner1982 View Post
Both of mine were longbeds...

Maybe I just never let them get low enough but I am pretty sure they are 16 gal. Maybe dual tanks had the 16s even if they were long beds?


All my square body, long bed, 10-30 series pickups were 20 gal, single or dual tanks including the 3 trucks,(80, 86, and 88V30) I own now.

Last edited by Dooley; 10-16-2009 at 12:15 PM.
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Old 10-16-2009, 12:25 PM   #9
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Re: Fuel tank size??

Quote:
Originally Posted by SBTork View Post
Most longbed dual tank trucks were 20 gallon tank trucks, but some were 16 as in the case of my old 86 C-10, it was a longbed with twin 16's.
In 1986 the half ton trucks received the 16 gallon tanks with a gas engine. The diesel C-K 10's had 20's.
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Old 10-16-2009, 02:14 PM   #10
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Re: Fuel tank size??

My SB 454 Big 10 came from the factory with one 16 gallon tank. Boy, that didn't get me very far.....
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Old 10-16-2009, 03:32 PM   #11
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Re: Fuel tank size??



Talk about not being able to drive by a gas station!!
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