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#1 |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,982
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Questions for under bed gas tank guys....
Those of you that moved the tank under the bed, can I get some follow-up info on the job?
What kind of tank did you use? How did you route the fill line? What size fill line? Any problems w/modern pumps 'shutting off' during the fuel fill process? I removed the in cab tank for a blazer unit under the floor. I've routed the OE 2.25" neck to 2" line to the tank w/one 90° bend (2" 90° pipe) to the tank inlet (enlarged to 2"). The fill line which is approx 22" currently only has < 5° of slope so I'm concerned the gas from these 'environmentally friendly' gas pumps is going to constantly shut the freakin pump off which is something I hate dealing w/on my 74. I did some Googling on the subject last night & didn't like all the issues I came across. Not just old cars (very common issue after searching through the HAMB) but new cars as well (late model Mustangs & Vettes seem to have more than their share of PO'd owners). I really don't want to have this 'filling up' hassle w/a truck that gets driven daily. Your info could help me or possibly others make better choices when taking on this modification.... Thanks in advance!
__________________
67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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#2 |
Its a Truck Thing......
Join Date: Dec 2004
Location: Sierra Vista, Arizona
Posts: 3,159
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Re: Questions for under bed gas tank guys....
I used the blazer tank (poly tank) and had a exhaust pipe bent to go to the tank. ( I will get pics) I added the vent at the top of the filler pipe and also have the vent line going to the charcoal canister that has a vent on it to from the tank. I still have problems filling up. I am thinking that going to a metal tank may resolve this issue. My filler is in the wheel well so it gets plenty of motion to get to the tank. I am thinking that the poly tank is causing the back pressure.
I have an extra fill tube so I will measure it. Its super duper cold out in the garage, but I will go get some pics. Thoughts???? Smitty
__________________
71 C10 283/3SPD Full Resto 71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599 70 C10 Suburban Former military GSA truck. 72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378 72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110 68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head 71 C30 Wrecker 71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck 68 GMC Long Stepside. They keep following me home 71 C20 Longhorn/Ole Yellor 69 C30 Former Motor Home, Flat Bed time |
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#3 |
Car Knocker
Join Date: May 2001
Location: jefferson,arkansas
Posts: 664
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Re: Questions for under bed gas tank guys....
I have the same problem. Had a pipe bent for the fuel line to see if I could help it out. I have a poly blazer tank. I believe that the problem is the actual fitting on the tank. What is it 1 1/2 id? I have two vents on mine and its still forever and a day to refuel. Thinking of cutting off fill fitting and welding a larger pipe into tank. I used to be able to do this when I worked in oilfield, but now, well lets just say I havent done it. Sorry no help, but I do feel your fustration.
__________________
68 c-10,91 sportside bed,350 .030 over,4 bolt,10-1 comp,2.05 intake/1.94 exhaust,1.6 Harland Sharp roller rockers,edelbrock rpm cam and intake w/750 carb, 700r4, 3.73 gears,Jacabbs Electronic Igntion w/Accel HEI distributer and super coil. ZR-1 roll pan, filled tailights. Blazer tank. Hidden hitch. 2 1/2" Flowmaster 40's. Parts bought but not installed>> ford 9" posi with disc. CCP front and rear lowering kit 4/5. Cab corners,foor boards,rockers, cab braces, Phatom grill, Painless wiring kit. |
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#4 | |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,982
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Re: Questions for under bed gas tank guys....
Quote:
In order to route my fill line to the blazer tank & keep it out of the way, I'll need to fill the tank from the inlet located just beside the inner bedside wall. This requires a 90° bend (2" mandrel bend tubing). I figured I would run a vent tube from the vent port adjacent to the tank inlet back up to the inlet/cap area but my continued research says this still may not be the answer. It's sounding like this is an all to common thing we 'put up with' but it sure takes away from the experience of owning/driving older iron....
__________________
67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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#5 |
Registered User
Join Date: Dec 2009
Location: fayetteville, nc
Posts: 7
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Re: Questions for under bed gas tank guys....
was it hard to change your tank out and about how much did it cost for your materials
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#6 |
*************
![]() Join Date: Apr 2005
Location: Pensacola, FL
Posts: 17,846
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Re: Questions for under bed gas tank guys....
I'm using 1 1/2" fill neck into my tank and have not had any issues. I do have more angle than you though...
R/
__________________
Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 |
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#7 |
VA72C10
![]() Join Date: Mar 2008
Location: Midlothian, VA
Posts: 25,269
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Re: Questions for under bed gas tank guys....
Good eventual FAQ thread....once a firm solution is found
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__________________
Looking for a 67-72 swb or blazer project in or around VA. ![]() |
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#8 |
Registered User
Join Date: Jan 2010
Location: Loudon,TN
Posts: 101
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Re: Questions for under bed gas tank guys....
I put a 25 gal. blazer tank under the bed where the spare tire was.I fill the tank with the tail gate down and have no issues filling.I ran 1/2 inch steel line to the front with an inline elecric pump and filter.
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#9 |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,982
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Re: Questions for under bed gas tank guys....
As in through the bed floor straight into the tank or w/a fill line?
__________________
67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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#10 |
"the other guy"
Join Date: Oct 2008
Location: Olivehurst California 95961
Posts: 901
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Re: Questions for under bed gas tank guys....
i used a tank from a 76 1/2 ton van, with a stake pocket filler (same as johns) 1.5" hose coming off the tank, to a 1.5" pipe with a 90 degree crush bent using a BFH and torch. i have one 3/8 vent 2'' below the fuel cap and one 1/4 vent to let the tank breath while consuming fuel. at the pumps i can let-er-rip with no problems. i guess what im trying to say is 1.5'' tube is more than adequate if vented properly.
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God Said,"Building A 10 Second Import Is Like Coming Out Of The Closet, In The End Ur Still....."EXPLETIVE" ![]() |
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#11 |
"the other guy"
Join Date: Oct 2008
Location: Olivehurst California 95961
Posts: 901
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Re: Questions for under bed gas tank guys....
make sure everything is down hill, any elevation in the plumbing will back up flow
__________________
God Said,"Building A 10 Second Import Is Like Coming Out Of The Closet, In The End Ur Still....."EXPLETIVE" ![]() |
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#12 | |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,982
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Re: Questions for under bed gas tank guys....
Quote:
The tank is raised slightly since the truck will be pretty low & the fill line will run just below the bed floor. Between the 2 points, the slope is < 5° (not level, but not much slope either). I'm starting to think I'll need to re-work the inlet & just do a straight shot up to the bed floor w/a flip up gas goor/cover although I prefer not to if possible.
__________________
67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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#13 |
State of Confusion!
![]() ![]() Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 46,924
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Re: Questions for under bed gas tank guys....
I have an original 72 Blazer tank (neck is different than the repops. I grafted a filler door from a 94 C1500 into the bed., welded some pipes to adjust it up to the newer diameter fill pipe. Fuel line is 3/8 from tank up in the passenger side rail with a 95 C1500 in line fuel filter.
I can't say how it fills/works yet as the truck is still in the "assembly" process.
__________________
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! |
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#14 |
Its a Truck Thing......
Join Date: Dec 2004
Location: Sierra Vista, Arizona
Posts: 3,159
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Re: Questions for under bed gas tank guys....
Heres what mine looks like.
Smitty
__________________
71 C10 283/3SPD Full Resto 71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599 70 C10 Suburban Former military GSA truck. 72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378 72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110 68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head 71 C30 Wrecker 71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck 68 GMC Long Stepside. They keep following me home 71 C20 Longhorn/Ole Yellor 69 C30 Former Motor Home, Flat Bed time |
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#15 |
"Trucks with Class"
![]() Join Date: Jul 2000
Location: OLYMPIA, WA, USA
Posts: 8,133
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Re: Questions for under bed gas tank guys....
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#16 | |
Its a Truck Thing......
Join Date: Dec 2004
Location: Sierra Vista, Arizona
Posts: 3,159
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Re: Questions for under bed gas tank guys....
Quote:
Smitty
__________________
71 C10 283/3SPD Full Resto 71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599 70 C10 Suburban Former military GSA truck. 72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378 72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110 68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head 71 C30 Wrecker 71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck 68 GMC Long Stepside. They keep following me home 71 C20 Longhorn/Ole Yellor 69 C30 Former Motor Home, Flat Bed time |
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#17 |
*************
![]() Join Date: Apr 2005
Location: Pensacola, FL
Posts: 17,846
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Re: Questions for under bed gas tank guys....
The side marker fill will get you about 30 - 45 degrees. It's a little tighter, but still doable.
__________________
Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 |
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#18 | |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,982
|
Re: Questions for under bed gas tank guys....
Quote:
No side markers on 64's though.
__________________
67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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#19 |
*************
![]() Join Date: Apr 2005
Location: Pensacola, FL
Posts: 17,846
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Re: Questions for under bed gas tank guys....
__________________
Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 |
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#20 |
GM ONLY BABY!!!
Join Date: Oct 2003
Location: Fort Wayne, IN.
Posts: 1,998
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Re: Questions for under bed gas tank guys....
Mine is a lot like this one, except I used a 20 gal. aluminum tank from Summit.
http://www.johnnyrods.com/67truck/
__________________
2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride ![]() ![]() http://www.cardomain.com/ride/707879...mc-c-k-pick-up |
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#21 | |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,982
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Re: Questions for under bed gas tank guys....
Quote:
__________________
67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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#22 | |
"the other guy"
Join Date: Oct 2008
Location: Olivehurst California 95961
Posts: 901
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Re: Questions for under bed gas tank guys....
Quote:
__________________
God Said,"Building A 10 Second Import Is Like Coming Out Of The Closet, In The End Ur Still....."EXPLETIVE" ![]() |
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#23 |
Account Suspended
Join Date: Jan 2007
Location: Tucson
Posts: 2,183
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Re: Questions for under bed gas tank guys....
I took the cowards way out and put the fill up through the bed floor. Fittings are for suction line, NHRA rollover valve and fill. The fill is a boat flush deck fitting...easy to get to, easy to fill, no annoying punp shutoffs. The tank is an Early Classics Stainless Steel tank.
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#24 |
Registered User
Join Date: Oct 2009
Location: Corbin Ky
Posts: 247
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Re: Questions for under bed gas tank guys....
Here is mine:
![]() ![]() ![]() Hope it helps....
__________________
1972 Chevy C10 SWB 1999 GMC Sonoma Mini 2008 Yamaha R1 2007 Harley Nightster |
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#25 |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,982
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Re: Questions for under bed gas tank guys....
This is the direction I'll go if I route a straight pipe up from the tank inlet. What did your 'hinge' come off of?
__________________
67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. Last edited by SCOTI; 01-31-2010 at 10:28 PM. |
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