filler neck for frame mounted tank - The 1947 - Present Chevrolet & GMC Truck Message Board Network

magoo72 · 01-13-2003, 05:30 AM

where is the best location for a filler neck when you mount an under bed tank. mine currently is under my wheel weel above the rear tire ,but i would like to install a fuel door.any body out there done it or any other ways to do the job, please send me a pic of jobs that have been done and or any tips. mr magoo

**71blksuper4x4** · 01-13-2003, 10:09 AM

Hope this helps, its a fuel door out of a 73-87 style pickup or blazer, don't know for sure.

**1970 CST Short Wide** · 01-13-2003, 10:22 AM

71blksuper4x4, NICE TRUCK, I hope to do a 4x4 for my next project

71Seth · 01-13-2003, 11:07 AM

I dont remember where but I have seen the rear marker light hinged and used to conseal the filler neck. Very,Very smooth. I'll let you know if I find somthing. Help me out guys if youve seen this.

my new 72 · 01-13-2003, 12:18 PM

I'm in the process of doing the filler behind the side marker thing now. Getting the hinged marker in was the easy part. Dirtdobber and I just finished fabbing up the filler tube using a filler tube from an 88 Buick Le Sabre. It will be all finished by the end of the week. It is a bit more entailed than tennman makes it out to be, as his is a 4x4 with a body lift, so he didn't have the clearance issues that us lowered 2wders have, but I am documenting the install, and will write up a full how to on the FAQ board when I am done.

72MARIO · 01-13-2003, 12:31 PM

The post about the taillight filler is at the paiont and body board

bouncytruck · 01-13-2003, 12:38 PM

Wes has this write up on his site
http://www.ClassicHeartbeat.com/mark...t_gas_door.htm

magoo72 · 01-18-2003, 02:27 AM

i am currently in process of the job. i have my marker lite hinged and my filler neck in place. all i have to do now is cover the area in my bed side and floor. then the task of connecting the 2'' S-10 filler neck to the 1 1/4 inch tank filler. this seems like it is going to be a chore to stretch the 1 1/4 '' hose over a 2'' neck! is this goin to be possible? or is there some way to reduce the 2'' neck? any help will be helpfull.
today i installed my new inst. bezel, back w/ chrome edges,boy it is sure pretty! only prob. was when i got ready to back my truck out of my shop i had no oil pressure! guess what! oil line had broken in the process of mounting my manual choke! so i had a big mess under the hood OIL EVERYWHERE! i have come to expect these little errors with every inprovement i make. it seems with every project i do i have to fix something else that i messed up durin the job. o well! all part of the fun with working on these old trucks.
my planned paint time is still set for 2nd week in feb. during speedweek. i hope i will be ready. wish me well. good luck to all on your old trucks! mr magoo

Zeke · 01-18-2003, 10:18 AM

magoo72 I haven't done this but wouldn't an exhaust pipe adapter work? 2" to 1 1/4". If there was a way to put a bead on it so the hose won't slip off?

barn9 · 01-18-2003, 02:30 PM

I've seen those adaptors made of rubber at plumbing supply stores, that could be another possibility.

**THECRAZYKIDJR** · 01-18-2003, 11:54 PM

I USED THE FACTORY FILLER NECK FROM A 69 BLAZER. EMAIL ME AND I SCAN AND SEND YOU A PIC IF INTERESTED.

magoo72 · 01-22-2003, 03:04 AM

today i finished off the filler neck part of the job. all i got left to do is box it in on the inside of my bed.
i wound up usin the filler neck i got out of the burb where i got the tank from. just had to do a little splicing to make the curves.i used a 8 '' 1 1/4 hose from a honda accord to make the connection. it was a booger gettin it all lined up,but that part is done
i went to the gas station and filled it up and no leaks! so i guess it was a successfull project. thanks to all for all your help. mrmagoo

magoo72 · 02-02-2003, 03:35 AM

this is how mine turned out

magoo72 · 02-02-2003, 03:40 AM

pic 2

magoo72 · 02-02-2003, 03:42 AM

filler up!

magoo72 · 02-02-2003, 03:46 AM

marker filler

magoo72 · 02-02-2003, 03:50 AM

first fill-up

*Piston* · 02-02-2003, 11:43 AM

Man thats got to turn some heads. Is it tough to get the gas cap off?

Looks like a clean install though. Nice job!

**68 Stepside** · 02-02-2003, 12:06 PM

Dude, you'd better get that scary guy away from your truck!! j/k of course

That's a sweet arrangement, I've always liked the marker light filler idea...too bad I have a stepside...

72gmcshorty · 02-02-2003, 02:52 PM

Anyone know how 71super4X4 got his gas filler hose to reach his tank? Thats where the filler is on my step side box and I was wondering how to reach a tank in theback. Any ideas?

jay6891 · 02-02-2003, 03:20 PM

How well did it fill up? On mine I can't get the nozzel to the first click before it shut off automaticly. Using the 2" to 1 1/4" adapter. Maybe I don't have enough vent. I have got one , think I might have to unplug another? How many vents you got on your tank? Any suggestions, takes me about 30 min. to fill up.

magoo72 · 02-02-2003, 04:54 PM

the cap is low enough for easy removal. as far as filling it up ,i made sure that my hose had no kinks or any areas lower than the tank.if any areas in the routing of the hose are lower than the tank, or if it has kinks it will cause a back flow. the gravity flow must be correct or it will act as a ''p'' trap and will take a long time to fillup. not to mention the angry folks in line behind you !

jay6891 · 02-02-2003, 07:14 PM

I don't think the hose drops below tank. Levels out when it goes between frame and bed support. I installed a lower radiator hose spring inside the hose to prevent kink. I will retry to get the angle of the dangle right, thanks, jay

*rayville body* · 02-02-2003, 11:16 PM

what size is the filler neck on a blazer tank? i was thinking that maybe when i do the conversion to mine i could use exaust pipe since we have a muffler shop in the place i work. is it possible? i was thinking of using a filler door and the little hump thingy out of a 73-87 bed floor to get the clearance. has anyone done this?

smokekiki · 02-03-2003, 10:02 AM

Do you guys that have the filler behind the marker live where the pumps have bellows on them for pollution control?

01-13-2003, 05:30 AM	#1
magoo72 Registered User Join Date: Jan 2003 Location: minden la Posts: 114	filler neck for frame mounted tank where is the best location for a filler neck when you mount an under bed tank. mine currently is under my wheel weel above the rear tire ,but i would like to install a fuel door.any body out there done it or any other ways to do the job, please send me a pic of jobs that have been done and or any tips. mr magoo

01-13-2003, 10:09 AM	#2
71blksuper4x4 SWB 4x4 Collector Join Date: Jun 2001 Location: Osage City, KS Posts: 5,151	Hope this helps, its a fuel door out of a 73-87 style pickup or blazer, don't know for sure. Attached Images __________________ TREVOR 1970 CST swb 4x4 (speedwarning,cruise,tilt,tach,8track, original red shoulder belts,tow hooks) 1972 Jimmy (soon to be Hickey cloned) 1971 Cheyenne Super 4x4 swb (tilt,tach,buckets, original blue shoulder belts,am/fm,cruise,tow hooks, dealer 8 track) 1972 Cheyenne Super K20 4x4 Custom Camper (tilt, tach, am/fm, tow hooks, bed toolbox, aux gas tank 1972 Cheyenne Super Crew Cab K30 4x4 Duramax, Allison, np205, buckets, tow hooks (CURRENT PROJECT) http://67-72chevytrucks.com/vboard/s...d.php?t=624819 1989 V3500 Crew Cab (454tbi, NV4500, np205) 1970 Chevelle SS (LS5 454,th400,8track,buckets,tach) :2004 Jeep Wrangler Rubicon (daily driver) WTB: 1968-70 Cruise Control Lever

01-13-2003, 10:22 AM	#3
1970 CST Short Wide Senior Moment Join Date: Mar 2002 Location: Pittsburg Ca Posts: 4,095	71blksuper4x4, NICE TRUCK, I hope to do a 4x4 for my next project __________________ 1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565

01-13-2003, 11:07 AM	#4
71Seth Registered User Join Date: Dec 2002 Location: calvert city, ky Posts: 282	I dont remember where but I have seen the rear marker light hinged and used to conseal the filler neck. Very,Very smooth. I'll let you know if I find somthing. Help me out guys if youve seen this. __________________ 97 ext cab 4x4 04 pontiac grand am 05 honda rancher AT (yellow) 71' C-10 swb sb400 th350 .040, 292 Mag comp cam, high rise Edelbrock w/750 duel feed Holley, Accel super coil and wires, B&M ratchet shifter

01-13-2003, 12:18 PM	#5
my new 72 faster, faster, faster Join Date: Dec 2001 Location: Houston ,Texas ,USA Posts: 1,354	I'm in the process of doing the filler behind the side marker thing now. Getting the hinged marker in was the easy part. Dirtdobber and I just finished fabbing up the filler tube using a filler tube from an 88 Buick Le Sabre. It will be all finished by the end of the week. It is a bit more entailed than tennman makes it out to be, as his is a 4x4 with a body lift, so he didn't have the clearance issues that us lowered 2wders have, but I am documenting the install, and will write up a full how to on the FAQ board when I am done. __________________ I'm going to Law School, wanna debate? It's good practice.

01-13-2003, 12:31 PM	#6
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,052	The post about the taillight filler is at the paiont and body board __________________ 1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD

01-13-2003, 12:38 PM	#7
bouncytruck SKINNY TIRES RULE! Join Date: Sep 2001 Location: Bothell, WA Posts: 11,049	Wes has this write up on his site http://www.ClassicHeartbeat.com/mark...t_gas_door.htm __________________ bouncytruck 1972 K5 The Hauler 1994 K1500 Suburban The Daily2010 Kia Soul Wife's Ride2014 Fiat 500L

01-18-2003, 02:27 AM	#8
magoo72 Registered User Join Date: Jan 2003 Location: minden la Posts: 114	i am currently in process of the job. i have my marker lite hinged and my filler neck in place. all i have to do now is cover the area in my bed side and floor. then the task of connecting the 2'' S-10 filler neck to the 1 1/4 inch tank filler. this seems like it is going to be a chore to stretch the 1 1/4 '' hose over a 2'' neck! is this goin to be possible? or is there some way to reduce the 2'' neck? any help will be helpfull. today i installed my new inst. bezel, back w/ chrome edges,boy it is sure pretty! only prob. was when i got ready to back my truck out of my shop i had no oil pressure! guess what! oil line had broken in the process of mounting my manual choke! so i had a big mess under the hood OIL EVERYWHERE! i have come to expect these little errors with every inprovement i make. it seems with every project i do i have to fix something else that i messed up durin the job. o well! all part of the fun with working on these old trucks. my planned paint time is still set for 2nd week in feb. during speedweek. i hope i will be ready. wish me well. good luck to all on your old trucks! mr magoo

01-18-2003, 10:18 AM	#9
Zeke Active Member Join Date: Jun 2002 Location: L.A. Lower Alabama Posts: 453	magoo72 I haven't done this but wouldn't an exhaust pipe adapter work? 2" to 1 1/4". If there was a way to put a bead on it so the hose won't slip off? __________________ 1969 C10 350 3spd 1995 GMC 3500 XC 350 dually When Thomas Edison worked late into the night on the electric light, he had to do it by gas lamp or candle. I'm sure it made the work seem that much more urgent. George Carlin

01-18-2003, 02:30 PM	#10
barn9 Half a bubble off! Join Date: Jun 2000 Location: Winfield, Ks, USA Posts: 5,588	I've seen those adaptors made of rubber at plumbing supply stores, that could be another possibility. __________________ Just call me LB. '71 Cheyenne, 402BB, hauls blondes, brunettes, or redheads.

01-18-2003, 11:54 PM	#11
THECRAZYKIDJR Registered User Join Date: Jun 2000 Location: GLENBURN, MAINE, USA Posts: 262	I USED THE FACTORY FILLER NECK FROM A 69 BLAZER. EMAIL ME AND I SCAN AND SEND YOU A PIC IF INTERESTED. __________________ JIM PARKER GLENBURN, MAINE 69 BURB 4WD - 307/4SPD/YELLOW 69 BLAZER (ORANGE / 35" SUPER SWAMPERS) 1970 CUSTOM-10

01-22-2003, 03:04 AM	#12
magoo72 Registered User Join Date: Jan 2003 Location: minden la Posts: 114	today i finished off the filler neck part of the job. all i got left to do is box it in on the inside of my bed. i wound up usin the filler neck i got out of the burb where i got the tank from. just had to do a little splicing to make the curves.i used a 8 '' 1 1/4 hose from a honda accord to make the connection. it was a booger gettin it all lined up,but that part is done i went to the gas station and filled it up and no leaks! so i guess it was a successfull project. thanks to all for all your help. mrmagoo

02-02-2003, 03:35 AM	#13
magoo72 Registered User Join Date: Jan 2003 Location: minden la Posts: 114	pics of my job this is how mine turned out Attached Images

02-02-2003, 03:40 AM	#14
magoo72 Registered User Join Date: Jan 2003 Location: minden la Posts: 114	pic 2 Attached Images

02-02-2003, 03:42 AM	#15
magoo72 Registered User Join Date: Jan 2003 Location: minden la Posts: 114	filler up! Attached Images



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02-02-2003, 03:46 AM	#16
magoo72 Registered User Join Date: Jan 2003 Location: minden la Posts: 114	marker filler Attached Images

02-02-2003, 03:50 AM	#17
magoo72 Registered User Join Date: Jan 2003 Location: minden la Posts: 114	first fill-up Attached Images

02-02-2003, 11:43 AM	#18
Piston Account Suspended Join Date: Oct 2002 Location: Olathe, KS Posts: 2,301	Man thats got to turn some heads. Is it tough to get the gas cap off? Looks like a clean install though. Nice job!

02-02-2003, 12:06 PM	#19
68 Stepside huh? Join Date: May 2000 Location: Washington, Illinois Posts: 5,692	Dude, you'd better get that scary guy away from your truck!! j/k of course That's a sweet arrangement, I've always liked the marker light filler idea...too bad I have a stepside... __________________ Someday when I'm lonely, Wishing you weren't so far away, Then I will remember Things we said today. RIP El Jay

02-02-2003, 02:52 PM	#20
72gmcshorty Registered User Join Date: Jul 2001 Location: North Delta, British Columbia Posts: 1,344	Anyone know how 71super4X4 got his gas filler hose to reach his tank? Thats where the filler is on my step side box and I was wondering how to reach a tank in theback. Any ideas? __________________ 1992 Gmc 2wd 1972 Chevy Blazer 2wd

02-02-2003, 03:20 PM	#21
jay6891 Car Knocker Join Date: May 2001 Location: jefferson,arkansas Posts: 664	How well did it fill up? On mine I can't get the nozzel to the first click before it shut off automaticly. Using the 2" to 1 1/4" adapter. Maybe I don't have enough vent. I have got one , think I might have to unplug another? How many vents you got on your tank? Any suggestions, takes me about 30 min. to fill up. __________________ 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.

02-02-2003, 04:54 PM	#22
magoo72 Registered User Join Date: Jan 2003 Location: minden la Posts: 114	no problems the cap is low enough for easy removal. as far as filling it up ,i made sure that my hose had no kinks or any areas lower than the tank.if any areas in the routing of the hose are lower than the tank, or if it has kinks it will cause a back flow. the gravity flow must be correct or it will act as a ''p'' trap and will take a long time to fillup. not to mention the angry folks in line behind you !

02-02-2003, 07:14 PM	#23
jay6891 Car Knocker Join Date: May 2001 Location: jefferson,arkansas Posts: 664	I don't think the hose drops below tank. Levels out when it goes between frame and bed support. I installed a lower radiator hose spring inside the hose to prevent kink. I will retry to get the angle of the dangle right, thanks, jay __________________ 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.

02-02-2003, 11:16 PM	#24
rayville body Account Suspended Join Date: Nov 2002 Location: rayville,LA Posts: 226	what size is the filler neck on a blazer tank? i was thinking that maybe when i do the conversion to mine i could use exaust pipe since we have a muffler shop in the place i work. is it possible? i was thinking of using a filler door and the little hump thingy out of a 73-87 bed floor to get the clearance. has anyone done this?

02-03-2003, 10:02 AM	#25
smokekiki Mike Join Date: Jan 2003 Location: west chester pa Posts: 2,474	Do you guys that have the filler behind the marker live where the pumps have bellows on them for pollution control? __________________ 70'c/10, 71 suburban4x4 402bb, 72suburban 4/6 drop, 72k/5 4x4 blazer 4" lift 35 tires

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