Fuel Tank - The 1947 - Present Chevrolet & GMC Truck Message Board Network

blaserman · 02-02-2005, 05:28 AM

Trying to find out how to tell how big of a fuel tank I have. It's a 85 k5 blazer
1/2 ton. Fuel sending unit is now working and need to get the right one after i run the gas out.

**Captkaos** · 02-02-2005, 08:01 PM

This might get moved to the Blazer or 73-87 section, but it most likely has the standard 28 gal tank. Have you checked the options sheet in the glovebox.

blaserman · 02-03-2005, 02:02 AM

Yea Chris,but it did not show what type of tank was in it. I know that that year came with 20, 26 and 36 gls. I found that out at chucks chevy site. I need to get the gas guage working right. I filled it up one day and it showed 1/4 tank but ran it for a week before it went down. Does the tanks have different measurements that I could find?

u2slow · 02-03-2005, 12:10 PM

25-gallon is 10-3/4" deep and the bottom half is shorter than the top half.

31-gallon is 12-3/4" deep and bottom half is about the same depth as the top half.

blaserman · 02-04-2005, 01:50 AM

Thanks on the measurements. I will try this weekend to get under it if it does not snow/rain, but now O'm sure it is 31 gls.

02-02-2005, 05:28 AM	#1
blaserman Senior Member Join Date: Nov 2004 Location: glen burnie md Posts: 447	Fuel Tank Trying to find out how to tell how big of a fuel tank I have. It's a 85 k5 blazer 1/2 ton. Fuel sending unit is now working and need to get the right one after i run the gas out.

02-02-2005, 08:01 PM	#2
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	This might get moved to the Blazer or 73-87 section, but it most likely has the standard 28 gal tank. Have you checked the options sheet in the glovebox. __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

02-03-2005, 12:10 PM	#4
u2slow Web Wheeler Join Date: Jan 2000 Location: BC, Canada, eh? Posts: 388	25-gallon is 10-3/4" deep and the bottom half is shorter than the top half. 31-gallon is 12-3/4" deep and bottom half is about the same depth as the top half. __________________ '66 C10 longstep - Clifford equiped '84 C20 Suburban 6.2L - awaiting 4x4 conversion '91 V3500 Crewcab - awaiting diesel swap

02-03-2005, 02:02 AM	#3
blaserman Senior Member Join Date: Nov 2004 Location: glen burnie md Posts: 447	Yea Chris,but it did not show what type of tank was in it. I know that that year came with 20, 26 and 36 gls. I found that out at chucks chevy site. I need to get the gas guage working right. I filled it up one day and it showed 1/4 tank but ran it for a week before it went down. Does the tanks have different measurements that I could find?

02-04-2005, 01:50 AM	#5
blaserman Senior Member Join Date: Nov 2004 Location: glen burnie md Posts: 447	Thanks on the measurements. I will try this weekend to get under it if it does not snow/rain, but now O'm sure it is 31 gls.



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