Blazer gas tank install tech article - The 1947 - Present Chevrolet & GMC Truck Message Board Network

tomatocity · 07-09-2005, 01:44 AM

http://www.brotherstrucks.com/tech/t...NSTALLATION%20

This is the Blazer/Suburban gas tank install Tech Article from Brothers. It does mention some trucks need to trim the bed sill but it does not sasy which models require the trimming. Does anyone know whick models require the bed sill (brace) to be trimmed?

krue · 07-09-2005, 05:23 AM

http://67-72chevytrucks.com/vboard/s...d.php3?t=74876
May have some info that will help.

chevyboy55 · 07-09-2005, 10:16 AM

I know first hand that a 72 lwb does.

superfly68 · 07-09-2005, 02:44 PM

i know i had to section mine on a 68 steel bed. pretty sure it's the same for all models.

superfly68 · 07-09-2005, 02:50 PM

pics always help...

jcfoote60 · 07-10-2005, 05:50 PM

What did you use to cut the bed support? Looks like a torch (which I don't have, or a plasma cutter). Do you think it could be done with an air cutoff wheel? I would guess I am SOL unless I invest in the proper tool or find someone to help out!

longnlow72 · 07-10-2005, 05:59 PM

yes it can be done with a cut off wheel just stock up on wheels thats how i did mine

Rokcrln · 07-10-2005, 07:36 PM

I used a 4" cut off wheel to do the entire body drop on my 71. It is alot cleaner then a torch or plasma (both of which I have). What I like are cut off wheel blades that are not thicker than .040 they seam to last longer than thicker ones and do not drag down the tool as bad.

Kevin

matthufham · 07-10-2005, 07:55 PM

Quote:

Originally Posted by Rokcrln

I used a 4" cut off wheel to do the entire body drop on my 71. It is alot cleaner then a torch or plasma (both of which I have). What I like are cut off wheel blades that are not thicker than .040 they seam to last longer than thicker ones and do not drag down the tool as bad.

Kevin

do you have a pneumatic cutoff wheel? Man that would take forever here waiting for the air to catch up (i have a 13 gallon compressor) but hey, I bet it was worth it.

Russell · 07-10-2005, 09:30 PM

I just used my actylene torch. Far from pretty, but the tank covers it up real nice like

crews · 07-10-2005, 11:37 PM

I did mine with a cutoff wheel in a right angle die grinder. It took a little longer than a plasma cutter, and isn't as clean initially but I have a lot of sheet metal tools and grinding bits so I cleaned mine up after I was done. It looks good enough for me...

Deuce · 07-11-2005, 01:08 AM

I couldn't bring myself to cut up a mint cross sill so I built 2 stubby sills that mount from the frame outwards.

jcfoote60 · 07-11-2005, 09:26 AM

OK, well I have the 4" pnuematic cutoff tool, so will use it. I noticed each picture is with the bed removed from the truck....I counted 8 bolts holding my SWB bed down (unless I missed something). It would be cool to remove the bed to get my gas tank in and would make the cutting a heck of a lot eaiser for the sill modification. My question is, what is the easiest way to lift off the bed? It is just my wife and I so hefting it without help is not an option. Anyone have advice or lessons learned they would like share on getting my bed removed? Thanks for you help!!

crews · 07-11-2005, 11:15 AM

Without a doubt this installation is MUCH easier with the bed removed. I am not even sure I would even think of attempting it with the bed in place. I had only my wife avail. when I took it off, but used an engine hoist/ cherry picker for the re-install.
Most tool rental places rent these and they aren't that expensive. I would not try this without some sort of hoist.

superfly68 · 07-11-2005, 11:23 AM

ok, here is what i did with mine by myself. Maybe not the smartest way but it worked. I used four ratchet straps(2 per end) and hung them from my rafters in the garage. Hooked them up to each corner and started racheting away. first one corner and then the other to make it even. then on to the other side. until it was high enough for me to roll the truck out from under it. Just to clarify i had 2 straps per end in case one failed. ratchet one up then the other. then move to the other end.
here are some pics....

redhead69 · 07-11-2005, 12:07 PM

I did mine with jig saw... just took off the gaurd and used a metal blade. Held it flush with the bottom of the bed and used the tool itself as a guide. I did use a cutoff wheel to get a hole started and to cut the vertical cuts. Couldnt have turned out any better IMO.

jcfoote60 · 07-11-2005, 02:36 PM

Hey redhead69 did you remove your bed to do the jigsaw cut or did you just tough it out from below with the bed installed?

Crews, how did you fasten the cherry picker to your bed to get an even lift? It looks like you have it fastened in the middle of your bed somehow but did you fasten on the corners too?? Can't tell from the pics....

Iceman7642 · 07-11-2005, 03:52 PM

How did u guys get your fillers to work??

mine sucked for a while until i made one out of copper, i think it was a darn good idea and it works like a charm now. But i dont recomened the welding of it while it is part way in the gas tank that has fuel in it...

matthufham · 07-11-2005, 04:49 PM

at first i had a 77 bed side that i was going to put in the corner of my bed, but i had clearance issues with the side marker light. i was going to just shave the side marker, but shaving X4 is much harder than making a simple box with a hole.
so i scrapped the 77 bedside idea after it was almost complete and just made the box

still not done, ran out of bondo. i plan to cover the bed and box in bedliner

redhead69 · 07-11-2005, 04:50 PM

jcfoote90..
I just did it with the bed on.. gloves, glasses, and wd40.

redhead69 · 07-11-2005, 04:58 PM

Iceman7642- I like that.. looks good!
I did mine just like that but used and s10 filler neck with a reducer on the end, but looks almost identical.. just a bit bigger. Just when I thought I had a one of a kind..haha. I know first hand the head scratching that went on to figure that one out!

Iceman7642 · 07-11-2005, 06:49 PM

i know, i had this image in my head and my dad and uncle didn't understand what i was doing, until i was all done. they were impressed, and i was happy.

tomatocity · 07-11-2005, 07:12 PM

[QUOTE=Iceman7642]How did u guys get your fillers to work??

mine sucked for a while until i made one out of copper, i think it was a darn good idea and it works like a charm now. But i dont recomened the welding of it while it is part way in the gas tank that has fuel in it...

Very nice. Where is your vent? What is the name of the larger copper piece near the top? What size tubing did you use? I still am not 100% sure of where I plan on installing the filler. Your is very nice.

**hilljob26** · 07-11-2005, 09:12 PM

i used a sawzaw on mine,i dont have pics right now,but i made my filler come out the marker light,but i also used a blazer tank out of a 80 blazer,it seems to be alright,i had to modify the inside of the bed,but when all is said and done,u probably wont even see it

tomatocity · 07-12-2005, 02:22 AM

pics are red x'd

still not done, ran out of bondo. i plan to cover the bed and box in bedliner[/QUOTE]

07-09-2005, 01:44 AM	#1
tomatocity Registered User Join Date: Jun 2005 Location: Sacramento CA Posts: 1,255	Blazer gas tank install tech article http://www.brotherstrucks.com/tech/t...NSTALLATION%20 This is the Blazer/Suburban gas tank install Tech Article from Brothers. It does mention some trucks need to trim the bed sill but it does not sasy which models require the trimming. Does anyone know whick models require the bed sill (brace) to be trimmed? __________________ Got bored, sold everthing. Got bored, looking for a 1960-66 C-10. Want to build my last truck.

07-09-2005, 05:23 AM	#2
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	http://67-72chevytrucks.com/vboard/s...d.php3?t=74876 May have some info that will help. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

07-09-2005, 02:44 PM	#4
superfly68 Registered User Join Date: Dec 2003 Location: Encinitas,CA Posts: 316	i know i had to section mine on a 68 steel bed. pretty sure it's the same for all models. __________________ no longer have a ride, but still a fan!

07-09-2005, 02:50 PM	#5
superfly68 Registered User Join Date: Dec 2003 Location: Encinitas,CA Posts: 316	pics always help... Attached Images __________________ no longer have a ride, but still a fan!

07-10-2005, 05:59 PM	#7
longnlow72 Registered User Join Date: Aug 2004 Location: SW Washington Posts: 947	yes it can be done with a cut off wheel just stock up on wheels thats how i did mine __________________ 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...

07-09-2005, 10:16 AM	#3
chevyboy55 Senior Member Join Date: Aug 2004 Location: Kelso,Wa Posts: 3,637	I know first hand that a 72 lwb does.

07-10-2005, 05:50 PM	#6
jcfoote60 Active Member Join Date: Jun 2005 Location: Idaho Posts: 263	What did you use to cut the bed support? Looks like a torch (which I don't have, or a plasma cutter). Do you think it could be done with an air cutoff wheel? I would guess I am SOL unless I invest in the proper tool or find someone to help out!

07-10-2005, 07:36 PM	#8
Rokcrln Senior Member Join Date: Jul 2005 Location: Winters Ca. 95694 Posts: 4,843	I used a 4" cut off wheel to do the entire body drop on my 71. It is alot cleaner then a torch or plasma (both of which I have). What I like are cut off wheel blades that are not thicker than .040 they seam to last longer than thicker ones and do not drag down the tool as bad. Kevin

07-10-2005, 09:30 PM	#10
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	I just used my actylene torch. Far from pretty, but the tank covers it up real nice like __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)

07-10-2005, 11:37 PM	#11
crews It just doesn't matter Join Date: Apr 2001 Location: Huntington Beach, Ca Posts: 1,660	I did mine with a cutoff wheel in a right angle die grinder. It took a little longer than a plasma cutter, and isn't as clean initially but I have a lot of sheet metal tools and grinding bits so I cleaned mine up after I was done. It looks good enough for me... __________________ 05 Chevy Silverado..... A rogue BMW guy.... If you don't like me- TAKE A NUMBER; There are people ahead of you!! Last edited by crews; 07-10-2005 at 11:40 PM.

07-11-2005, 01:08 AM	#12
Deuce Registered User Join Date: Apr 2004 Location: Calgary, Alberta,Canada Posts: 1,595	I couldn't bring myself to cut up a mint cross sill so I built 2 stubby sills that mount from the frame outwards. __________________ I know what your thinking.......I have ESPN. Sometimes it's easier to do things the hard way. Fesler Built 1968 Chevy C10....Must resist the urge to mess with it!!

07-11-2005, 09:26 AM	#13
jcfoote60 Active Member Join Date: Jun 2005 Location: Idaho Posts: 263	OK, well I have the 4" pnuematic cutoff tool, so will use it. I noticed each picture is with the bed removed from the truck....I counted 8 bolts holding my SWB bed down (unless I missed something). It would be cool to remove the bed to get my gas tank in and would make the cutting a heck of a lot eaiser for the sill modification. My question is, what is the easiest way to lift off the bed? It is just my wife and I so hefting it without help is not an option. Anyone have advice or lessons learned they would like share on getting my bed removed? Thanks for you help!!

07-11-2005, 11:15 AM	#14
crews It just doesn't matter Join Date: Apr 2001 Location: Huntington Beach, Ca Posts: 1,660	Without a doubt this installation is MUCH easier with the bed removed. I am not even sure I would even think of attempting it with the bed in place. I had only my wife avail. when I took it off, but used an engine hoist/ cherry picker for the re-install. Most tool rental places rent these and they aren't that expensive. I would not try this without some sort of hoist. __________________ 05 Chevy Silverado..... A rogue BMW guy.... If you don't like me- TAKE A NUMBER; There are people ahead of you!!

07-11-2005, 11:23 AM	#15
superfly68 Registered User Join Date: Dec 2003 Location: Encinitas,CA Posts: 316	ok, here is what i did with mine by myself. Maybe not the smartest way but it worked. I used four ratchet straps(2 per end) and hung them from my rafters in the garage. Hooked them up to each corner and started racheting away. first one corner and then the other to make it even. then on to the other side. until it was high enough for me to roll the truck out from under it. Just to clarify i had 2 straps per end in case one failed. ratchet one up then the other. then move to the other end. here are some pics.... Attached Images __________________ no longer have a ride, but still a fan!

07-11-2005, 12:07 PM	#16
redhead69 fugedaboutit Join Date: Mar 2005 Location: Gresham, OR Posts: 832	I did mine with jig saw... just took off the gaurd and used a metal blade. Held it flush with the bottom of the bed and used the tool itself as a guide. I did use a cutoff wheel to get a hole started and to cut the vertical cuts. Couldnt have turned out any better IMO. __________________ Currently truckless



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07-11-2005, 02:36 PM	#17
jcfoote60 Active Member Join Date: Jun 2005 Location: Idaho Posts: 263	Hey redhead69 did you remove your bed to do the jigsaw cut or did you just tough it out from below with the bed installed? Crews, how did you fasten the cherry picker to your bed to get an even lift? It looks like you have it fastened in the middle of your bed somehow but did you fasten on the corners too?? Can't tell from the pics....

07-11-2005, 03:52 PM	#18
Iceman7642 P!$$ on Ford Join Date: Jun 2003 Location: Federal Way, WA Posts: 334	fillers or bazer tanks How did u guys get your fillers to work?? mine sucked for a while until i made one out of copper, i think it was a darn good idea and it works like a charm now. But i dont recomened the welding of it while it is part way in the gas tank that has fuel in it... __________________ [FONT="Impact"][COLOR="Navy"]Michael Lowered 1972 C-20 Longbed with 350 and TH350 1995 Tahoe LS - Custom intake, k&n, TBI spacer, sweet tail lights, clear front lights... 2009 Nissan Versa I am 26, married, and we had our first baby in July of 2009

07-11-2005, 04:49 PM	#19
matthufham Registered User Join Date: Feb 2005 Location: Carl Junction, Missouri Posts: 2,061	at first i had a 77 bed side that i was going to put in the corner of my bed, but i had clearance issues with the side marker light. i was going to just shave the side marker, but shaving X4 is much harder than making a simple box with a hole. so i scrapped the 77 bedside idea after it was almost complete and just made the box still not done, ran out of bondo. i plan to cover the bed and box in bedliner

07-11-2005, 04:50 PM	#20
redhead69 fugedaboutit Join Date: Mar 2005 Location: Gresham, OR Posts: 832	jcfoote90.. I just did it with the bed on.. gloves, glasses, and wd40. __________________ Currently truckless Last edited by redhead69; 07-11-2005 at 04:52 PM.

07-11-2005, 04:58 PM	#21
redhead69 fugedaboutit Join Date: Mar 2005 Location: Gresham, OR Posts: 832	Iceman7642- I like that.. looks good! I did mine just like that but used and s10 filler neck with a reducer on the end, but looks almost identical.. just a bit bigger. Just when I thought I had a one of a kind..haha. I know first hand the head scratching that went on to figure that one out! __________________ Currently truckless

07-11-2005, 06:49 PM	#22
Iceman7642 P!$$ on Ford Join Date: Jun 2003 Location: Federal Way, WA Posts: 334	i know, i had this image in my head and my dad and uncle didn't understand what i was doing, until i was all done. they were impressed, and i was happy. __________________ [FONT="Impact"][COLOR="Navy"]Michael Lowered 1972 C-20 Longbed with 350 and TH350 1995 Tahoe LS - Custom intake, k&n, TBI spacer, sweet tail lights, clear front lights... 2009 Nissan Versa I am 26, married, and we had our first baby in July of 2009

07-11-2005, 07:12 PM	#23
tomatocity Registered User Join Date: Jun 2005 Location: Sacramento CA Posts: 1,255	[QUOTE=Iceman7642]How did u guys get your fillers to work?? mine sucked for a while until i made one out of copper, i think it was a darn good idea and it works like a charm now. But i dont recomened the welding of it while it is part way in the gas tank that has fuel in it... Very nice. Where is your vent? What is the name of the larger copper piece near the top? What size tubing did you use? I still am not 100% sure of where I plan on installing the filler. Your is very nice. __________________ Got bored, sold everthing. Got bored, looking for a 1960-66 C-10. Want to build my last truck.

07-11-2005, 09:12 PM	#24
hilljob26 Registered User Join Date: Dec 2004 Location: Gypsum Kansas 67448 Posts: 1,681	i used a sawzaw on mine,i dont have pics right now,but i made my filler come out the marker light,but i also used a blazer tank out of a 80 blazer,it seems to be alright,i had to modify the inside of the bed,but when all is said and done,u probably wont even see it __________________ 21 2500hd duramax 58 apache HILLJOB GRAPHIX--for all your graphic needs My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=542497 LS ENGINE SWAP INFORMATION THREAD http://67-72chevytrucks.com/vboard/s...d.php?t=377348 4l60 to an NP205 http://67-72chevytrucks.com/vboard/s...43#post3697343

07-12-2005, 02:22 AM	#25
tomatocity Registered User Join Date: Jun 2005 Location: Sacramento CA Posts: 1,255	pics are red x'd still not done, ran out of bondo. i plan to cover the bed and box in bedliner[/QUOTE] __________________ Got bored, sold everthing. Got bored, looking for a 1960-66 C-10. Want to build my last truck.

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