'69 C-10 fuel tank capacity ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

697498chevy · 02-01-2009, 06:07 PM

One book says 21 gallons , another says 21.5 gallons . When my truck's dead on empty it will only hold 17 gallons . Does it really have 4 more gallons in it ? Need to have tank close to empty as I want to change the fuel pump . Still remember how gas feels running down my arm . Takes a bit to plug the line . THANKS !

Sammy · 02-01-2009, 06:39 PM

My 69 holds 17 spillin over the top. I call it a 16 gal tank. Maybe 70/71 tank could hold more? Blazer/ Burp tank might hold 21.

**El Jay** · 02-01-2009, 06:52 PM

The cab tank on my '69 holds a over 20 gals.
I've never run it dry to find out exactly, but I have put 20+ gals. in it.

If you have a rubber line feeding the fuel pump; get yourself a golf tee & as soon as you pull rubber line off the pump, cram the golf tee into it.

**clay68c10** · 02-01-2009, 07:07 PM

Just clamp off the rubber line with a vise-grip before you pull it loose. The needle nose ones work the best.

697498chevy · 02-01-2009, 08:16 PM

THANKS for the replies . Vice Grip and golf tee sound good . I just use a bolt . Problem is I want to change the hose also . Guess I could drain gas in a can and use it in the lawnmower . THANKS , again .

**El Jay** · 02-01-2009, 08:30 PM

Have the rubber hose ready to go & plugged on 1 end.

Take the old 1 off the hard line & cram the new rubber hose on real quick like.
I are not a redneck, honest, I'm not.

cdowns · 02-01-2009, 09:08 PM

clamp the rubber hose under the cab

Gray Ghost · 02-01-2009, 09:24 PM

I never got more than 18 in mine either and I ran it dry twice trying to see if I could put 21 in it.

Longhorn Man · 02-01-2009, 11:17 PM

there were many with 17/18 gallon tanks. But all the lit (and every truck I've owned) held 21 and some chainge.
As for how to do the job at hand, slide the seat forward, disconnect the fitting at the sending unit. Fire up engine and rev till it stalls. hook up line, and do the pump and rubber lines.
It's never a good idea to use vise grips on a rubber line. There's a special tool made to clamp hoses, and it doesn't have teeth on it.

Gray Ghost · 02-01-2009, 11:54 PM

That's weird that the lit all says 21 and there are tanks that only hold 18. Glad I have confirmation that I am not completely nuts though!

697498chevy · 02-02-2009, 06:09 PM

THANKS for all the good ideas . Gonna crawl under the truck and look for a hose under the cab . Never knew there was one . Bet it's in bad shape . THANKS again .

Green Machine · 02-02-2009, 06:40 PM

We had the tank out for carpet and drained and cleaned it out on the 1970. It took exactly 4 gallons before the needle started to move from E. Wanted to know how much "reserve" there was. Now if the fuel pump can suck that low, I don't know.

As for the pump, LHM has the best plan.

02-01-2009, 06:07 PM	#1
697498chevy Registered User Join Date: Jan 2009 Location: South Carolina Posts: 265	'69 C-10 fuel tank capacity ? One book says 21 gallons , another says 21.5 gallons . When my truck's dead on empty it will only hold 17 gallons . Does it really have 4 more gallons in it ? Need to have tank close to empty as I want to change the fuel pump . Still remember how gas feels running down my arm . Takes a bit to plug the line . THANKS !

02-01-2009, 06:39 PM	#2
Sammy Registered User Join Date: Apr 2000 Location: Bonne Terre, Mo Posts: 3,005	Re: '69 C-10 fuel tank capacity ? My 69 holds 17 spillin over the top. I call it a 16 gal tank. Maybe 70/71 tank could hold more? Blazer/ Burp tank might hold 21. __________________ '69 Chevy Long Fleet & '71 GMC Short Step & Project "ODD BALL" "You can wash a pig, soak it in most expensive perfume. In the end it is still just a pig." ODD BALL build thread http://67-72chevytrucks.com/vboard/s...d.php?t=478629"

02-01-2009, 06:52 PM	#3
El Jay Gone to greener pastures Join Date: May 2007 Location: Gateway to the Delta Posts: 7,354	Re: '69 C-10 fuel tank capacity ? The cab tank on my '69 holds a over 20 gals. I've never run it dry to find out exactly, but I have put 20+ gals. in it. If you have a rubber line feeding the fuel pump; get yourself a golf tee & as soon as you pull rubber line off the pump, cram the golf tee into it. __________________ '69 Chevy 1/2 T LWB Stepper: Daily Beater '72 GMC 3/4 T Fleet: Another Daily Beater '72 Plymouth Gran Coupe: ? "Ah women. They make the highs higher and the lows more frequent." Friedrich Nietzsche "Never kick a fresh turd on a hot day." Harry S. Truman GUN CONTROL: Never having to say, "I missed you." Always fire two warning shots into your attacker's chest area before putting a bullet between his eyes. Paraphrased from Louis Awerbuck

02-01-2009, 07:07 PM	#4
clay68c10 Senior Member Join Date: Aug 2004 Location: Centennial, CO Posts: 2,979	Re: '69 C-10 fuel tank capacity ? Just clamp off the rubber line with a vise-grip before you pull it loose. The needle nose ones work the best. __________________ ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ

02-01-2009, 08:16 PM	#5
697498chevy Registered User Join Date: Jan 2009 Location: South Carolina Posts: 265	Re: '69 C-10 fuel tank capacity ? THANKS for the replies . Vice Grip and golf tee sound good . I just use a bolt . Problem is I want to change the hose also . Guess I could drain gas in a can and use it in the lawnmower . THANKS , again .

02-01-2009, 08:30 PM	#6
El Jay Gone to greener pastures Join Date: May 2007 Location: Gateway to the Delta Posts: 7,354	Re: '69 C-10 fuel tank capacity ? Have the rubber hose ready to go & plugged on 1 end. Take the old 1 off the hard line & cram the new rubber hose on real quick like. I are not a redneck, honest, I'm not. __________________ '69 Chevy 1/2 T LWB Stepper: Daily Beater '72 GMC 3/4 T Fleet: Another Daily Beater '72 Plymouth Gran Coupe: ? "Ah women. They make the highs higher and the lows more frequent." Friedrich Nietzsche "Never kick a fresh turd on a hot day." Harry S. Truman GUN CONTROL: Never having to say, "I missed you." Always fire two warning shots into your attacker's chest area before putting a bullet between his eyes. Paraphrased from Louis Awerbuck Last edited by El Jay; 02-01-2009 at 08:31 PM.

02-01-2009, 09:08 PM	#7
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: '69 C-10 fuel tank capacity ? clamp the rubber hose under the cab __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

02-01-2009, 09:24 PM	#8
Gray Ghost Senior Member Join Date: Sep 2004 Location: Terrell, TX Posts: 1,967	Re: '69 C-10 fuel tank capacity ? I never got more than 18 in mine either and I ran it dry twice trying to see if I could put 21 in it. __________________ Kelly '05 GMC Sierra SLE Z71 Bone stock except for new bed rail caps.

02-01-2009, 11:17 PM	#9
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: '69 C-10 fuel tank capacity ? there were many with 17/18 gallon tanks. But all the lit (and every truck I've owned) held 21 and some chainge. As for how to do the job at hand, slide the seat forward, disconnect the fitting at the sending unit. Fire up engine and rev till it stalls. hook up line, and do the pump and rubber lines. It's never a good idea to use vise grips on a rubber line. There's a special tool made to clamp hoses, and it doesn't have teeth on it.

02-01-2009, 11:54 PM	#10
Gray Ghost Senior Member Join Date: Sep 2004 Location: Terrell, TX Posts: 1,967	Re: '69 C-10 fuel tank capacity ? That's weird that the lit all says 21 and there are tanks that only hold 18. Glad I have confirmation that I am not completely nuts though! __________________ Kelly '05 GMC Sierra SLE Z71 Bone stock except for new bed rail caps.

02-02-2009, 06:09 PM	#11
697498chevy Registered User Join Date: Jan 2009 Location: South Carolina Posts: 265	Re: '69 C-10 fuel tank capacity ? THANKS for all the good ideas . Gonna crawl under the truck and look for a hose under the cab . Never knew there was one . Bet it's in bad shape . THANKS again .

02-02-2009, 06:40 PM	#12
Green Machine Senior Member Join Date: Jul 2004 Location: Estherville, Iowa Posts: 3,371	Re: '69 C-10 fuel tank capacity ? We had the tank out for carpet and drained and cleaned it out on the 1970. It took exactly 4 gallons before the needle started to move from E. Wanted to know how much "reserve" there was. Now if the fuel pump can suck that low, I don't know. As for the pump, LHM has the best plan. __________________ 1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0 Last edited by Green Machine; 02-02-2009 at 06:43 PM.

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