Not about a fuel cell..... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Slammed70 · 11-30-2006, 01:06 AM

How big are the incab gas tanks for these trucks?

Im filling my truck up every 3-4 days. I never let it get lower then 1/4 tank. It usually holds 10-11 gallons when I do.

If Im doing the math correctly I get about 6-7 MPG.

I work 15 miles from home, so 30 miles round trip....and I rarely drive around other then that.

That sucks....

skchevota · 11-30-2006, 01:24 AM

I believe they are 20 gal.

chevguy7 · 11-30-2006, 02:40 AM

Pretty sure mine is a 20 gallon.

Longhorn Man · 11-30-2006, 03:20 AM

I put just shy of 22 gallons in mine once.
Some of the trucks...seems to be more on the 67 and 68, but some of them are more like 16 - 17 gallons.

Bishops Trucks · 11-30-2006, 04:54 AM

Both my '71's are labeled 16 but if you force it you can get 17 in it. On my '68, I have not payed attention to it when I feel it up because I just assumed it was the same as the others. Yes, I know to assume is to make an "ass u me".

**Palf70Step** · 11-30-2006, 06:33 AM

Sounds like you have the typical old truck gas gauge, way off. Most of the trucks I have seen the tank is 20 gal. Short trips and depending on your gearing, 7 Mpg might be accurate. But your gauge is probably off and you have a lot more fuel left in the tank than what you think.

1969C/10 · 11-30-2006, 07:31 AM

^^^I agree. I have the same problem in my truck. I can fill the tank up in my truck and the first 3/4 of a tank goes extremely fast, but I can drive on the last 1/4 of a tank for a really long time.

fatboys69 · 11-30-2006, 11:15 AM

I had the same issues, till I replaced my cluster with a Covens Insert wtih
Autometer Ultralite gages and realized that the factory gage was not fuctioning correctly. The new gage cluster works MUCH better and is way more accurate.

Longhorn Man · 11-30-2006, 03:03 PM

figure your MPG by miles driven and gallons used.... you don't even need a fuel guage to figure out the MPG.

67ChevyRedneck · 11-30-2006, 03:11 PM

Quote:

Originally Posted by Palf70Step

Sounds like you have the typical old truck gas gauge, way off. Most of the trucks I have seen the tank is 20 gal. Short trips and depending on your gearing, 7 Mpg might be accurate. But your gauge is probably off and you have a lot more fuel left in the tank than what you think.

I had the same problem Bill. The last time I had my dash apart I figured my fuel gage was off by almost 1/4 tank, so I took the face off the gages, hooked it up, turned the key on, let the needle move to where it needed then moved it back 1/4 tank woth of gas. I had to do this a couple times to get it correct, but my gage now reads E with about 3 gallons left and when it's "full" it goes 1/4 tank past the F.

I think my tank was 20 gallons.

Slammed70 · 11-30-2006, 11:53 PM

Quote:

Originally Posted by Bishops Trucks

I feel it up.

Lol

**Boog** · 11-30-2006, 11:59 PM

Whup. don't go there.

11-30-2006, 01:06 AM	#1
Slammed70 Registered User Join Date: Oct 2006 Location: Cheney, KS Posts: 669	Not about a fuel cell..... How big are the incab gas tanks for these trucks? Im filling my truck up every 3-4 days. I never let it get lower then 1/4 tank. It usually holds 10-11 gallons when I do. If Im doing the math correctly I get about 6-7 MPG. I work 15 miles from home, so 30 miles round trip....and I rarely drive around other then that. That sucks....

11-30-2006, 01:24 AM	#2
skchevota Registered User Join Date: Oct 2006 Location: Evans, Colorado Posts: 530	Re: Not about a fuel cell..... I believe they are 20 gal.

11-30-2006, 02:40 AM	#3
chevguy7 Registered User Join Date: Oct 2006 Location: Washington Posts: 316	Re: Not about a fuel cell..... Pretty sure mine is a 20 gallon.

11-30-2006, 03:20 AM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Not about a fuel cell..... I put just shy of 22 gallons in mine once. Some of the trucks...seems to be more on the 67 and 68, but some of them are more like 16 - 17 gallons.

11-30-2006, 04:54 AM	#5
Bishops Trucks KEEP ON TRUCKIN' Join Date: Jun 2005 Location: Sterling, Va. Posts: 5,731	Re: Not about a fuel cell..... Both my '71's are labeled 16 but if you force it you can get 17 in it. On my '68, I have not payed attention to it when I feel it up because I just assumed it was the same as the others. Yes, I know to assume is to make an "ass u me". __________________ JIM '97 GMC Sierra K1500 '95 Chevy Silverado C1500 '71 Cheyenne Z71 / LT1 & 4-Speed SWB K/10 Father/Son Project http://www.youtube.com/watch?v=4l689JKXPnA http://67-72chevytrucks.com/vboard/payments.php "LIVIN' FREE FOREVER"

11-30-2006, 06:33 AM	#6
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 46,845	Re: Not about a fuel cell..... Sounds like you have the typical old truck gas gauge, way off. Most of the trucks I have seen the tank is 20 gal. Short trips and depending on your gearing, 7 Mpg might be accurate. But your gauge is probably off and you have a lot more fuel left in the tank than what you think. __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

11-30-2006, 07:31 AM	#7
1969C/10 Unskilled Labor Join Date: Jul 2006 Location: OH-IO Posts: 788	Re: Not about a fuel cell..... ^^^I agree. I have the same problem in my truck. I can fill the tank up in my truck and the first 3/4 of a tank goes extremely fast, but I can drive on the last 1/4 of a tank for a really long time. __________________ 1986 K/20, 350/TH400, My First 4x4.......

11-30-2006, 11:15 AM	#8
fatboys69 Registered User Join Date: Aug 2006 Location: Dayton, Tennessee Posts: 447	Re: Not about a fuel cell..... I had the same issues, till I replaced my cluster with a Covens Insert wtih Autometer Ultralite gages and realized that the factory gage was not fuctioning correctly. The new gage cluster works MUCH better and is way more accurate.

11-30-2006, 03:03 PM	#9
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Not about a fuel cell..... figure your MPG by miles driven and gallons used.... you don't even need a fuel guage to figure out the MPG.

11-30-2006, 11:59 PM	#12
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,201	Re: Not about a fuel cell..... Whup. don't go there. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross



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