Why did some 8 foot bed trucks have 16 gallon fuel tank instead of 20 gallon? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

2badgn · 01-22-2011, 10:22 AM

I have a 1984 GMC 3500 Sierra 2wd single rear wheels, single fuel tank Pickup. My dad bought it brand new in 1984 as a weekend work truck.

It doesnt have AC, power locks/windows/carpet/dome light/spare tire, etc.

Very few options- 4.11 gears/350 engine-4 bolt main/extra leaf springs/HD Tranny.

Why did some 8 foot bed trucks get a 16 gallon fuel tank and others get the 20 gallon tank?

monte0185 · 01-22-2011, 10:32 AM

My guess would be the frame setup used was optioned for twin tanks but since you dad just wanted a single then they removed one from an already fitted frame at the factory. Just a guess though.

2badgn · 01-22-2011, 10:37 AM

My dad bought the truck off the lot of a GMC Truck dealership in the Bronx. He did not special order the truck.

**old Rusty C10** · 01-22-2011, 10:41 AM

im guessing that 16 gallon was standard and 20 was an option? you may want to PM Keith Seymour for that he was one of the guys that designed /built em

munice · 01-22-2011, 11:54 AM

Mines got a single 16, but of course thats cause it lost its second tank a long time ago.

GM72K10 · 01-22-2011, 12:02 PM

Truck should have came with a 20 gallon tank not a 16, see spec book for stds.
The book is for 1984 models, I'd have to look up the 1974.

Restrorob · 01-22-2011, 12:59 PM

My 74 LB C10 came from the factory with a 16 gal tank as well, The OP bought the truck new off the lot....

2badgn · 01-22-2011, 02:10 PM

Truck is at the shop now but Im going to measure te size of the tank.

I think its a 16 gallon bc of the fuel receipt from service station but i dont know if the gas gauge is 100% accurate.

foamypirate · 01-22-2011, 03:43 PM

My 87' 1/2 ton long bed also has 16 gallon tanks (duals though).

GM72K10 · 01-22-2011, 05:43 PM

Here's the page for C10s from the 84 GM Truck Data Book

Restrorob · 01-22-2011, 05:51 PM

Haha, Are you testing our ability to read up side down ?

Don't know if it matters but that's from the diesel section.....

GM72K10 · 01-22-2011, 07:39 PM

Sorry about that, here's the gas model page, right side up!

str8axle55 · 01-22-2011, 08:33 PM

LMC also says this in there catalog, lists both tanks for LB trucks, and to measure. I guess it happend fairly often.

DBLSPRT68 · 01-23-2011, 02:21 PM

My 3/4T truck chassis was originally an 82. It's got dual 20 gallon tanks. The 83 1/2T I took the cab from years ago, had dual 16 gallon tanks..... It must have been an option, as to the size you wanted?

01-22-2011, 10:22 AM	#1
2badgn Registered User Join Date: Nov 2009 Location: Yonkers, NY Posts: 277	Why did some 8 foot bed trucks have 16 gallon fuel tank instead of 20 gallon? I have a 1984 GMC 3500 Sierra 2wd single rear wheels, single fuel tank Pickup. My dad bought it brand new in 1984 as a weekend work truck. It doesnt have AC, power locks/windows/carpet/dome light/spare tire, etc. Very few options- 4.11 gears/350 engine-4 bolt main/extra leaf springs/HD Tranny. Why did some 8 foot bed trucks get a 16 gallon fuel tank and others get the 20 gallon tank? Last edited by 2badgn; 01-22-2011 at 10:36 AM.

01-22-2011, 10:32 AM	#2
monte0185 Registered User Join Date: Oct 2008 Location: Brighton, TN Posts: 1,267	Re: Why did some 8 foot bed trucks have 16 gallon fuel tank instead of 20 gallon? My guess would be the frame setup used was optioned for twin tanks but since you dad just wanted a single then they removed one from an already fitted frame at the factory. Just a guess though. __________________ A computer once beat me at chess, but it was no match for me at kick boxing. Duct tape is like the force. It has a light side, a dark side, and it holds the world together. Last edited by monte0185; 01-22-2011 at 10:33 AM.

01-22-2011, 10:37 AM	#3
2badgn Registered User Join Date: Nov 2009 Location: Yonkers, NY Posts: 277	Re: Why did some 8 foot bed trucks have 16 gallon fuel tank instead of 20 gallon? My dad bought the truck off the lot of a GMC Truck dealership in the Bronx. He did not special order the truck.

01-22-2011, 10:41 AM	#4
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,310	Re: Why did some 8 foot bed trucks have 16 gallon fuel tank instead of 20 gallon? im guessing that 16 gallon was standard and 20 was an option? you may want to PM Keith Seymour for that he was one of the guys that designed /built em __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

01-22-2011, 11:54 AM	#5
munice regular everyday normal guy Join Date: Aug 2009 Location: SW Ontario, Canada Posts: 125	Re: Why did some 8 foot bed trucks have 16 gallon fuel tank instead of 20 gallon? Mines got a single 16, but of course thats cause it lost its second tank a long time ago. __________________ -Andrew- 1987 Chevrolet V10 SM465 NP208 w/ '89 454 dual plane hi-rise 750cfm 1407 w/ '86 10b /14b new motor on the way: GM#990 heads 25cc speed pro pistons COMP XE 274h crane gold rollers

01-22-2011, 12:02 PM	#6
GM72K10 Next! Join Date: Jan 2003 Location: Eastern Pa. Posts: 2,483	Re: Why did some 8 foot bed trucks have 16 gallon fuel tank instead of 20 gallon? Truck should have came with a 20 gallon tank not a 16, see spec book for stds. The book is for 1984 models, I'd have to look up the 1974. Attached Images __________________ 86 K30 CUCV M1028A1 86 K30 CUCV M1028a2 dually 86 K30 C&C 6.2 4:56s, 4M, 11,000 gvw, ex fire truck, now lowboy dump More square bodies and CUCVs than I care to admit to 2020 Silverado K3500HD Work truck Last edited by GM72K10; 01-22-2011 at 02:21 PM.

01-22-2011, 12:59 PM	#7
Restrorob The One And Only !!! Join Date: Jan 2007 Location: Hole in the woods Florida Posts: 4,567	Re: Why did some 8 foot bed trucks have 16 gallon fuel tank instead of 20 gallon? My 74 LB C10 came from the factory with a 16 gal tank as well, The OP bought the truck new off the lot.... __________________ 93 Jeep XJ 88 Buick La Sabra Toys; 88 TA-GTA in the works.... 97 GMC Ext. Cab 502 Crate 5 Spd......Sucks Gas But Haulz Azz ! The primary function of an Engineer is to make it difficult for the Fabricator and impossible for the Mechanic. *"Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!*

01-22-2011, 02:10 PM	#8
2badgn Registered User Join Date: Nov 2009 Location: Yonkers, NY Posts: 277	Re: Why did some 8 foot bed trucks have 16 gallon fuel tank instead of 20 gallon? Truck is at the shop now but Im going to measure te size of the tank. I think its a 16 gallon bc of the fuel receipt from service station but i dont know if the gas gauge is 100% accurate.

01-22-2011, 03:43 PM	#9
foamypirate Registered User Join Date: Apr 2009 Location: Pflugerville, TX Posts: 594	Re: Why did some 8 foot bed trucks have 16 gallon fuel tank instead of 20 gallon? My 87' 1/2 ton long bed also has 16 gallon tanks (duals though).

01-22-2011, 05:43 PM	#10
GM72K10 Next! Join Date: Jan 2003 Location: Eastern Pa. Posts: 2,483	Re: Why did some 8 foot bed trucks have 16 gallon fuel tank instead of 20 gallon? Here's the page for C10s from the 84 GM Truck Data Book Attached Images __________________ 86 K30 CUCV M1028A1 86 K30 CUCV M1028a2 dually 86 K30 C&C 6.2 4:56s, 4M, 11,000 gvw, ex fire truck, now lowboy dump More square bodies and CUCVs than I care to admit to 2020 Silverado K3500HD Work truck

01-22-2011, 05:51 PM	#11
Restrorob The One And Only !!! Join Date: Jan 2007 Location: Hole in the woods Florida Posts: 4,567	Re: Why did some 8 foot bed trucks have 16 gallon fuel tank instead of 20 gallon? Haha, Are you testing our ability to read up side down ? Don't know if it matters but that's from the diesel section..... __________________ 93 Jeep XJ 88 Buick La Sabra Toys; 88 TA-GTA in the works.... 97 GMC Ext. Cab 502 Crate 5 Spd......Sucks Gas But Haulz Azz ! The primary function of an Engineer is to make it difficult for the Fabricator and impossible for the Mechanic. *"Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!*

01-22-2011, 07:39 PM	#12
GM72K10 Next! Join Date: Jan 2003 Location: Eastern Pa. Posts: 2,483	Re: Why did some 8 foot bed trucks have 16 gallon fuel tank instead of 20 gallon? Sorry about that, here's the gas model page, right side up! Attached Images __________________ 86 K30 CUCV M1028A1 86 K30 CUCV M1028a2 dually 86 K30 C&C 6.2 4:56s, 4M, 11,000 gvw, ex fire truck, now lowboy dump More square bodies and CUCVs than I care to admit to 2020 Silverado K3500HD Work truck

01-22-2011, 08:33 PM	#13
str8axle55 Registered User Join Date: May 2009 Location: Weymouth Ma Posts: 489	Re: Why did some 8 foot bed trucks have 16 gallon fuel tank instead of 20 gallon? LMC also says this in there catalog, lists both tanks for LB trucks, and to measure. I guess it happend fairly often. __________________ 03 GMC Yukon XL 2500 Quadrasteer, wife`s DD 84 Chevy K30 CC SRW 55 Chevy 210 2dr post

01-23-2011, 02:21 PM	#14
DBLSPRT68 Registered User Join Date: Nov 2000 Location: Ft. Mill, SC USA Posts: 931	Re: Why did some 8 foot bed trucks have 16 gallon fuel tank instead of 20 gallon? My 3/4T truck chassis was originally an 82. It's got dual 20 gallon tanks. The 83 1/2T I took the cab from years ago, had dual 16 gallon tanks..... It must have been an option, as to the size you wanted? __________________ PROJECT TRUCK: 1985 SWB C10 Silverado Black/Charcoal, 1990 V2500 Suburban, 2018 Suburban, 2005 GMC 2500HD CCSB, 2014 Toyota Camry SE, HAD.....1968 Camaro RS/SS Family owned since new; 350 3 speed SOLD



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