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Old 10-08-2020, 01:30 PM   #1
13jraven
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Suburban Gas Tank in a K30 CC

I ordered a 40 gallon suburban tank to install behind the rear axle in my K30 crew cab.

I looked at some threads with a filler in the bed and modifying the fuel door.

Curious what people are doing for fillers these days.

Headed to go pick up my bed from the painter today.

Thanks,

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Old 10-09-2020, 09:17 AM   #2
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Re: Suburban Gas Tank in a K30 CC

Filler in the bed = easier to fill. I know guys have made fill tubes to allow using the OE door set-ups but to me that just asks for issues (constant shutting off the flow while filling).

A discrete fill setup off to the side (adjacent to the stake pocket) allows an easier path for the gas flow while not impeding use of the bed floor.
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Old 10-09-2020, 10:16 AM   #3
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Re: Suburban Gas Tank in a K30 CC

I am not overly excited with a filler door on the bed floor.

Funny you recommend that - I found this last night and like how this lays out.

Thanks,

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Old 10-09-2020, 10:36 AM   #4
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Re: Suburban Gas Tank in a K30 CC

Quote:
Originally Posted by 13jraven View Post
I am not overly excited with a filler door on the bed floor.

Funny you recommend that - I found this last night and like how this lays out.

Thanks,

13
That's is exactly what I was trying to describe. It gives you vertical fall of the liquid to help keep it away from the dreaded 'splash-back' that shuts the pump nozzle off & keeps it out of the floor area. Paint to match & it's better hidden in plain sight.

*EDIT*
I modded a swb steel floor for a 'through the floor' fill & used the neck & cap from a 67-72 in-cab gas tank since the size was more than adequate & they make a rubber grommet for the exterior sheet metal to seal the inside of the cab off. Of course there are much 'slicker' versions/options available as well.
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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; 10-09-2020 at 10:44 AM.
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Old 10-09-2020, 10:40 AM   #5
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Re: Suburban Gas Tank in a K30 CC

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Originally Posted by SCOTI View Post
That's is exactly what I was trying to describe. It gives you vertical fall of the liquid to help keep it away from the dreaded 'splash-back' that shuts the pump nozzle off & keeps it out of the floor area. Paint to match & it's better hidden in plain sight.
I did an in floor filler with trap door in a c10 short bed and it was always messy.

Much smarter.

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Old 10-09-2020, 11:01 AM   #6
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Re: Suburban Gas Tank in a K30 CC

Tweaked 67-72 set-up I mentioned....
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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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Old 10-09-2020, 11:59 AM   #7
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Re: Suburban Gas Tank in a K30 CC

You also might have issues with the shock mounts on a k30. The suburbans, blazers, and the lighter duty trucks all had the shocks on the outside of the frame. The 1-tons moved the shocks inboard. I've heard of folks adding the suburban tank to the c30/k30 trucks, but it often involves some intentional denting of the tank to get enough clearance.
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Old 10-09-2020, 12:07 PM   #8
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Re: Suburban Gas Tank in a K30 CC

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Originally Posted by kipps View Post
You also might have issues with the shock mounts on a k30. The suburbans, blazers, and the lighter duty trucks all had the shocks on the outside of the frame. The 1-tons moved the shocks inboard. I've heard of folks adding the suburban tank to the c30/k30 trucks, but it often involves some intentional denting of the tank to get enough clearance.
I moved the shocks forward of the rear axle (inside the frame) with a shock mount that sits level with the high side of the frame.
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Old 10-09-2020, 12:50 PM   #9
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Re: Suburban Gas Tank in a K30 CC

Quote:
Originally Posted by 13jraven View Post
I am not overly excited with a filler door on the bed floor.

Funny you recommend that - I found this last night and like how this lays out.

Thanks,

13
That is slick and just what I need. Where did you find it?
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Old 10-09-2020, 01:07 PM   #10
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Re: Suburban Gas Tank in a K30 CC

https://www.carolinatruckshop.com/
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Old 10-11-2020, 02:27 PM   #11
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Re: Suburban Gas Tank in a K30 CC

Ive thought about doing a pop up cap inside the stake pocket. Not sure how feasible that is.
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Old 10-11-2020, 05:08 PM   #12
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Quote:
Originally Posted by catch2otwo View Post
Ive thought about doing a pop up cap inside the stake pocket. Not sure how feasible that is.
That might too much precision when filling up to not drip/dump diesel down the side of my paint.

I feel better about a bed filler with surrounding linex.
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