63-72 Chevy & GMC Truck SIDE Fill Rear Gas Tank Conversion Install 

Step by step, full explanation of how to avoid future problems, like drilling the cross member. This gas tank install is so much better then the factory behind the seat tank. Thanks Dave!

Thank you so much for sharing your knowledge...👍👍👍

Love the videos. Long time consumer. Very inspiring to get my truck up and running.

Man oh man! Every video you do is absolutely clear and complete. Even when it comes down to why you do it a certain way, you give us the reason why you do it that way. When your all done it is a complete install with all the questions answered. I'm going to look for the video for the filler neck. Thanks for doing these instructional video's. It sure make me feel more confident I can do it myself. I only need to decide if I'm going to keep the carburetor or go with EFI, but either way, the tank is going in the back.

Nailed another video. These are so helpful and I am using them on my 74 jimmy

thanks so much for the help will definetely order from Brothers

Followed video step by step and install went perfectly. Only thing I would recommend differently is after cutting seal plate in rear of bed to clear new tank - I cut two pieces of 1/2 EMT conduit (fits perfectly side by side) to bridge the gap on the inside of the channel and welded it for additional support and reinforcement

Hi David, just wanted to say how much I enjoy these videos. I’ve watched everything from rust repair, to brake upgrades, to this fuel tank video. You are a natural teacher, and have a great ability to provide encouragement and confidence to beginners. Hopefully this pays dividends to Brothers Trucks too, so they keep you busy making more videos.

I’m impressed

The air hose should be ran high up inside the bedside. A rollover valve should be installed prior to a filter you mentioned. However, factory filler neck have a fitting to allow air displaced during filling, a place to go. This operates the aspirator tube to shut off the pump and helps reduce the interruption of fuel flow when refilling. I would recommend a period correct carbon canister, when “Tee’d” into your air line, can store & save the hydrocarbons you paid for. Using a vacuum switching valve that opens when coolant is at operating conditions, the engine will evacuate the raw hydrocarbons and add to fuel economy. A late model canister can be adapted from a salvage yard and mounted underneath out of sight, but the folks using an “LS” type engine can be programmed to operate purge only thru one hose. No EVAP software needs to run. If you don’t give a captured place for your tank fumes to go, like a canister, you will smell raw fuel sitting still durning ambient temperature changes. The fuel heats up while driving from road heat, exhaust and any engine that uses a return fuel line, from the injector rail, regulator type fuel filter or mechanical fuel pumps that have the return line. Just something to plan for as every project is different. Nice products at Brothers though. Research & plan helps. ASE Master Tech since 1978 - Retired

Thank you. I was thinking of doing this to my 71 C20 but I see that it will interfere with my custom bed and bumper. Bought this new and been driving it with the tank at my back till now, a couple more years won't hurt.

For us lazy people a follow on how to hide a filler neck would be cool. Thanks for the videos.

Thanks for another great video! Do you have any videos showing the finished filler tube and call the the slide and center filler tanks? Thank you

Great video. I am interested in swapping my gas tank for one of these side-fill blazer gas tanks. I have seen a couple videos of the installation of the tank itself, but I cant find any videos of what people do with the filler. Does anyone seen a video of people actually routing the filler on one of these tanks. Thanks

Well done video. Pretty straight forward. I wish you would have shown one of your products for the filler opening. I’ve got to do low budget so that would probably be. In the wheel well correct? Thanks again for the great demo!

Question about cutting the bed sill...did you cut the wrong side of the sill?? I ask because if you flip that sill, thats how its mounted to my bed and how it sits on my frame.

I hope brothers will offer their own version of the tail light fuel filler door assembly.

Thank you for this installation guide, went very well on my 72 GMC. What is the capacity on this tank though? It does not say on the website.

What are the options for the vent outlets and return lines do they make caps to block one side over like on filler neck side I would like to see a video on installing the fuel line filler/vent install im sure they there I just can’t find them

Nice vid budy! Do you have any options for an easy replacement for an 84? I have 2 tanks one that wont switch over and one that just needs a replacement. Was thinking about going with a cell in the bed so I wouldn't have to remove the bed and I could just drop the tanks. Looking forward to any help you got.

Maybe it depends on where you get your tank from, mine is from LMC, but i can't slide my tank far enough back to be able to move the fill neck behind the floor sill so what i have to do is cut it off and move it back at least 2". Does it make a difference from a steel bed to a wood bed? From what i can see this is a wood bed.

I building 72 G10 dropped it cut 1/2 off coil spring , We’re do I find best sway bar kit

Just received my tank! Curious if there's any benefit to running a thin strip of rubber along the outer-flange of the tank to provide a barrier between metal on metal.

This fuel tank conversion is one of the projects that I have on my list. Question, at the 5:11 mark, instead of cutting out the notch in the frame, why couldn't you take a torch to the area and hammer it down to make clearance? No material is removed, thus maintaining structural integrity for those of us who have the optional leaf spring suspension.

This is awesome do u guys have an aftermarket tank like this one for a 1950 Chevy pickup? I just finished my 6.0/4l60 swap I need to install the gas pump inside the tank, thanks guys.

What if bolt’s didn’t come in my kit? Where can I buy the strap bolts?

what kind of filter do you use on the vents?

How would you run your exhaust through the back of the truck?

I have a 70' Chevy C20 longhorn and it was converted to propane at some point with a filler door on the passenger side. I will be converting back to gasoline soon. Is it possible to flip this tank around to fill it on the passenger side and keep my current filler door?

what’s difference in side fill vs top fill. i put a side fill in mine and didn’t know if there was any reason to switch over ? i was wanting to keep my filler hidden but can’t find a decent spot or way to put it in

Do you have any videos or options for 1965 and routing the filler behind the tail light? Is it possible to put some type of hinges on stock light or do I need to replace with some sorta kit

I put a 65 corvair body on a 95 s10 frame. Using a blazer gas tank where the corvair motor use to be how much clearnce is there suppose to be around the gas tank or should I use thick rubber.only have a 1/2" clearnce around tank.

Is there any reason the straps could be eliminated and just bolt the tank directly through the flanges? And do you need a thin strip of rubber between?

@brotherstrucks will the 63 blazer tank work on a 61 Apache camper special?

I have a 64 c10 that I plan on installing bags and a bolt in c notch. Will this tank work for me or will I have trouble with ground clearance?

On the side where you start drilling the strap holes through frame is the bolt going to be through frame then tank and then straps ?? Or holes only for straps and you put different bolts through existing holes on frame to hold tank to frame??

Where exactly did you run the vent hose you mentioned at the very end. The only problem I'm having with my install is that it's not venting properly, making filling a pain. Can you recommend a vented filler neck that might work with this setup? Thanks.

do you have the measruements so i can check if it fits my 68 d100 sweptline

Does this tank need painted to prevent rust or is it coated already?

Do you have any photos of the finished truck to see how far the tank hangs down?

Will this be a direct bolt in replacement for my 1964 GMC carryall (suburban)

Any chance you have a tank that will fit my 72 Chevy Van? Hard pressed to find one.

Mr. Welch. Is there a change in fuel line size, or a difference between 3/8 or 5/16? Should the fuel line size be changed?

Can you do this with a 80s C10? I want to do under the bed tank but retain the side fill door on the drivers side of the bed

Could you make a " How To " video on how to hook up 2 fuel tanks with one pump? I own a 87 Chevy V20 6.2L diesel and I am looking to add a 20 gallon plastic/poly auxiliary fuel tank on the passenger side of my fleet side bed which already has the hole and door in the side of the bed. Basically my truck bed that I bought was set up for 2 tanks

New sub here with a question. Will this hinder lowering the truck?

I have a 1964 GMC C -10 305 V6 3500 does anyone no if there's interchangeable parts like suspension,brakes any upgrades to modern parts. Is this truck rare.???

Is this a full-size blazer tank? Would an s10 blazer tank work?

I bought a 1972 c10 stepside not long ago and I really wanna do this to it I just don’t know what all do I need I been looking a different website but on the kits it only shows straps and sending unit I don’t find where do I get the new lines and the nozzle and cap to place it on the side field can some one please help me out I sure will ethanol you for this video it helps a hole lot

My 17yo son bought a 72 C10 that he wants to do this conversion. The previous owner had this side fill tank but he had cut out the cross member that the tank goes up next to. We have looked all over and can not find one and it appears that no one reproduces this part. Do you have any suggestions on where i may be able to find this cross member?

Since he's installing a blazer gas tank on a Chevy truck, can I install the 82-86 year 25 gallon blazer gas tank on my 85 Chevy to get a side inlet rear mounted gas tank?

The only concern I would have is notching the frame if you intend to carry heavy loads, maybe welded supports in that area?

Can I put that tank in a 77 frame rails Chevy C 10

Will this tank work for my 56 3100 ?

So I'm just starting my project but want the filler behind the rear licences plate .. is there a option for this or do I need to have it moved..working on 67 GMC

Which bed support needs to be cut. And what are the measurements for the cuts. I have a steel bed and want to get the cuts right the first time

Does this fit the short bed?

Where does the fuel line connect ?

so were the other little inlets just plugged off?

Como puedo conseguir un tanque asi

Does brothers have a filler neck that can be bought for this tank?

What kind of filter should I put on the breather hose?

Is the 1960 Apache the same ?

Will this tank work for a step side

I want to see how it was finished

Can you tell me where would I get a unit to attach to fuel gauge pin on sending unit.

Will this also fit my 1960 c10?

What gallon tank is this

Don't know if anyone has asked this but, I put my bed back on the truck and got 7 out of the 8 bolts back on. Anyone know how to get that last bolt back on? Rear bolt, driver side, bolt that sits in the middle of where the tank is.

Where do the fuel pump install?

Is that a1967-72 blazer has tank

How do you access the left bed retaining hardware by the filler to bolt the bed on after the tank installation?

I purchased this tank for my 71 GMC short bed along with the in tank fuel pump kit from tanks inc. will this work with this tank or only top fill tanks which are more flat? Hope I hear from you guys soon. Don’t want to ruin this tank and have to buy another one.

Same kit for a 62 ?

What is the price for the tank?

Is there anyway I can get a tank that can be under the bed and still fill from the cab?

Why not lower the tank rather than cutting the bed rale?