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12-17-2004, 06:29 PM
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#1 |
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Majician
Join Date: Nov 2004
Location: In the Middle
Posts: 329
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Behind-the-seat gas tank questions.
First question - How many gallons is the gas tank behind my seat? I have searched here and on google but couldn't find anything.
Second question - I plan to swap a TBI motor into my '72. Will the factory gas tank work ok? Are there any slosh/pick up issues? Thanks. |
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12-17-2004, 06:35 PM
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#2 |
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Registered User
Join Date: Aug 2004
Location: SW Washington
Posts: 947
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the tanks are 20 gallons (correct me if im wrong) dont know about the 2nd question
__________________
72 Chevy lwb, cowl hood, shaved antenna, shaved bedrails, blazer tank, sidemarker fill, 1pc windows, flowmaster 40's, alpine deck, infinity 6x9's, infinity 4"ers, 2 jl audio 10w0's, grant wheel, keyless entry and alarm, more waiting to be done... |
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12-17-2004, 06:39 PM
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#3 |
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Majician
Join Date: Nov 2004
Location: In the Middle
Posts: 329
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If it is 20 gallons, then maybe my gas gauge is off? When it is under a 1/4 tank it will only take about 9 gallons.
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12-17-2004, 07:11 PM
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#4 |
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Account Suspended
Join Date: Mar 2001
Location: Virginia Beach, Va. U.S.A.
Posts: 15,320
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That's definately wrong.
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12-17-2004, 11:30 PM
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#5 |
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Registered User
Join Date: Aug 2004
Location: SW Washington
Posts: 947
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i know the blazer tanks are 21 i was thinkin the truck tanks were the same
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72 Chevy lwb, cowl hood, shaved antenna, shaved bedrails, blazer tank, sidemarker fill, 1pc windows, flowmaster 40's, alpine deck, infinity 6x9's, infinity 4"ers, 2 jl audio 10w0's, grant wheel, keyless entry and alarm, more waiting to be done... |
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12-17-2004, 11:32 PM
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#6 |
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Got Light Emitting Diode?
Join Date: Apr 2004
Location: Newberg, OR
Posts: 2,485
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i think they are like 19 or 20 gallons
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1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags '02 Chevy Silverado LT ext cab short bed 2WD 5/7 drop on 22's  (the family car)1993 Cherokee work ride/weekend wheeler |
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12-17-2004, 11:36 PM
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#7 |
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Senior Member
 Join Date: Mar 2003
Location: Colfax-California
Posts: 8,650
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Second question - I plan to swap a TBI motor into my '72. Will the factory gas tank work ok? Are there any slosh/pick up issues?
Thanks.[/QUOTE] I am going to do the same thing on my 69 GMC. The tank will work, but what I did was get a sending unit with the vapor return line in it to use for the return. On the frame rail will be an electric pump rated for the TBI. |
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12-18-2004, 12:34 AM
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#8 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Some trucks had a smaller tank...16-ish or so...the others had 22 gallon tanks.
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12-18-2004, 12:38 AM
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#9 |
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Hittin E-Z Street on Mud Tires
Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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When I fill my truck up it usually takes about 15 gallons....I never dare run her near dry.... so I'd agree with longhorn that some are about 16 gal....
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Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride  American Born, Country by the Grace of God  1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! |
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12-18-2004, 12:42 AM
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#10 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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While I have not seen anything written about the small tanks, it seems the earlier trucks...esp stripped down versions, they seemed to have the smaller tanks.
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12-18-2004, 12:47 AM
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#11 |
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Got Light Emitting Diode?
Join Date: Apr 2004
Location: Newberg, OR
Posts: 2,485
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my 68 was/is a stripped verson, boy am i glad i dont have a small tank i cant imagine stopping at a gas station any more than i do already
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1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags '02 Chevy Silverado LT ext cab short bed 2WD 5/7 drop on 22's (the family car)1993 Cherokee work ride/weekend wheeler |
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12-18-2004, 11:25 PM
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#12 |
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Registered User
Join Date: Mar 2003
Location: Crescent City, FL
Posts: 492
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Page 67 of my 72 Owner's and Driver's Manual states 20.2 US gallons for C and K10 back of seat tanks.
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Bob 68 C20 Camper Special |
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12-18-2004, 11:49 PM
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#13 |
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Registered User
Join Date: Feb 2003
Location: Mesquite, Tx
Posts: 396
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Should be no problem using your tank for the TBI. I had TBI for a while. My sending unit had an indention in it. I just drilled it and got some brake line and brazed it in for the return line and ran it through the floor of the cab next to the fuel line. I did away with the TBI, but I can snap you a pic of the sending unit if you like. I have a vacuum cap over it with a hose clamp now.
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GM 330HP/350, Magnuson 122HH, Tremec TKO 5spd |
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12-19-2004, 01:18 AM
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#14 |
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Majician
Join Date: Nov 2004
Location: In the Middle
Posts: 329
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Thanks everyone for the information.
gmc67swb - I shouldn't need a pic right now, I think that I understand how you did it; if I do need a pic after the swap I will remember to ask you. Just curious, why did you get rid of the tbi? |
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