Replacing GM Square Body Saddle Tanks with One Rear Suburban Tank | 1986 GMC

In todays video we will start going back together with the GMC's fuel system.
Instead of repairing and replacing two of everything for the original system I am retrofitting a 25 gallon 1986 GMC Suburban tank behind the rear axle.

Parts used:
Dorman RNB-576-320 fuel tank
Wix 33033 (3/8") fuel filter
60" each 3/8" & 1/4" steel lines and female flare connectors

Special guest appearance: Mr. Bean

[SignalyardsGarage]

I immediately thought of the 56 Chevy tail light with the filler hidden behind it when you mentioned your idea. Awesome idea! I love it!

[mikewhitley]

I watched the video a little further along and I got my answer to the gas tank question that I posted earlier, you sure are doing a nice job! My compliments, Mike

[sparkplug]

That Dodge 5500 with the boom sure is handy! And yes, the filler behind the taillight, as with the 1950’s Cadillacs, would indeed be cool.

[melissadunagan]

I like both of your last ideas on the fuel filler.

[Ridefastorgetpassed]

Love it !! Going to have to come up with something similar on my wifes 73 K20 with dual saddle tanks. The only issue is we dont want to lose the capacity. The truck is fuel hungry .

[timbarr]

Nice fabrication and skills bud I’m doing the same thing on my 84 Chevy pickup nice to see a detailed video

[RTHim]

I really like the idea of placing it behind the light.
I have a 67 Chevelle and you know the layout on this model.

[adambatchelder]

I might add a blazer tank for a 3rd tank some day. For my application I really like the saddle tanks for low centered weight. And I do like having a spare tire at least for now.

[rolandlewis]

Filler tube behind tail light is a very a classy way to go, specially on a pick up.

[Friedbrain]

Hoarfrost day I see LOL Double flare the tubes or expect leaks later. Use as much steel line as possible even if just a foot or two. Rubber hoses should only be small lengths such as 6" or less. Like the idea of getting rid of the double saddle tanks. Putting the filler opening behind the taillight is a great idea!

[kevinpfaff]

A great project! On the tank filler, the tail light is very retro and cool. I suppose just above the tail light there isn't enough room for the filler door. As usual, great skill and craftsmanship, Mr. Jayhawker!

[ronaldfarmer]

++++GREAT HIDE THE FUEL FILLER Ala tri five chevys. I love that touch

[LSandL]

I would HIGHLY recommend putting the fuel vent tube and vapor canister back into play, because that will help in tank pressure regulating and putting the fuel vapors to work with intake delivery!

[randallsanders]

Good job on the mod & fabrications! I, too, am not much into modifications but I think you made a good decision regarding the gas tank. There is a you tube channel of "Fitzee's Fabrications" & he has a video where he moved the filler neck from one side of a truck bed to the other side. That might be worth your while to see that if you want to move the gas filler door. Of course, you most likely could do the Mr. Bean cut & paste move yourself but I thought I'd suggest it anyway. I know how good the feeling is when you start to grab stuff from the disassembled pile & put it back where it belongs. But, still, I wish I could just snap my fingers & have it all fall into place. It'll be awesome to see the engine, tranny & cab back together -- I'll be pullin for ya.

[papilloncycles]

Better to have the gas filler in the side of the truck to keep it from allowing water to get in, and the full use of the bed!

[Twilightzoneisreal]

Heck yeah to the filler idea from the 50's. I've often thought of doing Ol' suburban tank swap. Less maintenance and aggravation.

[boatnut]

Merry Christmas, to You and Your Family... ❤❤❤

[robertturner]

Through the taillight would be practical for a mod. (Once it's done. 😉)

[mikewhitley]

There's a company out there that manufactures a flush mount gas filler neck, it has no door and you can push in and turn and remove the gas tank cap they really are pretty nice I believe they come in a chrome color but you have the option to paint it the color of the body. Kind of cool and pretty simple to do. Just a thought, putting it exiting the tail light is quite a bit of work
.

[donchoate]

Merry Christmas to you and your family.