what size is a stock gas tank? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

70 shorty · 03-06-2005, 10:35 PM

The last 2 times I've filled up my tank I've only been able to put 10 and 11 gallons in it. The gauge read about 1/4 each time. Does this sound about right, or is my gauge off? I was assuming it was a 20 gallon tank. Mine is a six cylinder if there were different size tanks.

*Randy70C-10* · 03-06-2005, 11:37 PM

Is this the tank I gave you? It should hold at least 16-18 gallons I think. I acquired three more if you need another.

Robert1970C20rstbukt · 03-06-2005, 11:48 PM

The behind-the-seat tanks hold about 20 or 21 gallons. The gauge on my truck was reading almost empty and when I filled it up it took about 17 gallons so I was cutting it close with my gas guzzler.

Longhorn Man · 03-07-2005, 12:21 AM

there were some 17 gallon tanks..i don't know where they slipped in..but they are out there. (even thyough the books all say 21 gallons)

70 shorty · 03-07-2005, 10:05 AM

Yeah Randy, it's the one you gave me. I thinking my gauge is reading wrong. I put a new sending unit in it when I put it in. I've got another gauge from another cluster, so I may try that.

Gary Lee · 03-07-2005, 10:13 AM

Here's what I did... Filled up a 3 gal tank of gas. Put it in the bed, left it there till I ran out of gas, put in the 3 gal and got to the nearest station and saw it take anothe 18 gal or so... Then what does your gas gauge look like?...

farside847 · 03-07-2005, 01:30 PM

My tank shows empty after burning 17 gal. But it holds over 20.

03-06-2005, 10:35 PM	#1
70 shorty Where's my beer? Join Date: Oct 2004 Location: Glen Allen, VA Posts: 1,768	what size is a stock gas tank? The last 2 times I've filled up my tank I've only been able to put 10 and 11 gallons in it. The gauge read about 1/4 each time. Does this sound about right, or is my gauge off? I was assuming it was a 20 gallon tank. Mine is a six cylinder if there were different size tanks. __________________ 70 C10, shortstep, .30 over 250,Hurst shifted 3 spd parts hauler. Holley 390, Clifford Intake, Header, ported cylinder head, unknown bigger cam. 79 Corvette L82, 4 spd, black, red interior, headers, flowmasters, and unkown bigger cam. '03 Grand Cherokee Laredo, 4.0 4x4 daily driver. 165K miles, and runs great '08 Tahoe LTZ 4x4 155K

03-06-2005, 11:48 PM	#3
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	The behind-the-seat tanks hold about 20 or 21 gallons. The gauge on my truck was reading almost empty and when I filled it up it took about 17 gallons so I was cutting it close with my gas guzzler. __________________ RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck

03-07-2005, 10:05 AM	#5
70 shorty Where's my beer? Join Date: Oct 2004 Location: Glen Allen, VA Posts: 1,768	Yeah Randy, it's the one you gave me. I thinking my gauge is reading wrong. I put a new sending unit in it when I put it in. I've got another gauge from another cluster, so I may try that. __________________ 70 C10, shortstep, .30 over 250,Hurst shifted 3 spd parts hauler. Holley 390, Clifford Intake, Header, ported cylinder head, unknown bigger cam. 79 Corvette L82, 4 spd, black, red interior, headers, flowmasters, and unkown bigger cam. '03 Grand Cherokee Laredo, 4.0 4x4 daily driver. 165K miles, and runs great '08 Tahoe LTZ 4x4 155K

03-07-2005, 01:30 PM	#7
farside847 Registered User Join Date: Feb 2005 Location: Bay Area, California Posts: 995	My tank shows empty after burning 17 gal. But it holds over 20. __________________ 1971 Chevy C10 Shortbed Stepside, 307v8 3-on-the-tree

03-06-2005, 11:37 PM	#2
Randy70C-10 Account Suspended Join Date: Mar 2001 Location: Virginia Beach, Va. U.S.A. Posts: 15,320	Is this the tank I gave you? It should hold at least 16-18 gallons I think. I acquired three more if you need another.

03-07-2005, 12:21 AM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	there were some 17 gallon tanks..i don't know where they slipped in..but they are out there. (even thyough the books all say 21 gallons)

03-07-2005, 10:13 AM	#6
Gary Lee fixer of 72 GMC LWB Join Date: Feb 2005 Location: Newnan GA Posts: 111	Here's what I did... Filled up a 3 gal tank of gas. Put it in the bed, left it there till I ran out of gas, put in the 3 gal and got to the nearest station and saw it take anothe 18 gal or so... Then what does your gas gauge look like?...



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