Obs 38 gallon rear tank.

Hey I seen lmc truck has a 38 gallon rear tank but says only fits to 89. The tanks are the same in the 96 psd right?

look up www.DzlJim.com . here is how to do the 38 gal rear tank.

lc tpi said:

look up www.DzlJim.com . here is how to do the 38 gal rear tank.

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This. Got mine from rock auto.

got mine from rockauto as well. do a part number search for "F26E" they are $171

funny thing is they are made in Canada but when I try and buy one here they cost about $400. $270 for the part and another $150 to have them ship it to me from the closest warehouse with stock.
they have a warehouse in Burnaby but apparently they wouldnt ship it internally from the stocking warehouse.
so I had to save $200 and buy from Rockauto LoL

Does that tank have a flat spot on the bottom to put a sump?

lildiup said:

Does that tank have a flat spot on the bottom to put a sump?

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Has the same bottom profile as your stock rear tank.

I know it's a bad pic... But this is how most sump the rear 38 gallon tanks

I haven't looked at mine yet but I'm guessing there is not a good flat spot to put a sump. So you weld that in or just bolt with an o ring?

look at yours

I think they are brazed or welded in. But not sure

in for details, I need to drop my tank to fix the fuel gauge/ pick up tube problem anyway, might as well add capacity!!

Also in for details. I plan on just using the 38 gallon rear tank with a sump and getting rid of the selector valve and front tank to simplify my fuel system.

pretty easy to add a fuel tank bulkhead in -10

http://www.summitracing.com/dom/parts/sum-220082b/overview/

In the pic I posted, it's just a Bulkhead fitting. No welding or brazing

Best mod I've ever done to any obs.
You can get the tank on eBay for around $200, as well.

Still gotta get sending unit right? Does it plug into stock harness?

you modify your existing stuff typically

I used modified bronco sending unit and put the fuel pump in the tank

FrankTheTank said:

I know it's a bad pic... But this is how most sump the rear 38 gallon tanks

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FYI I would never sump a tank like that. Over time the vibrations that fitting experiences WILL break the steel around it causing it to leak. It's not IF but WHEN.
The proper way to install a sump would be to get one of the larger diameter billet alum sumps like what Bean's sells (they sell them for a reason).

Or, if you are set on building your own, start by welding a large diameter washer to the tank (3" or 4" diameter), then a smaller one, and so on, until you have a hole to install the bulkhead fitting. This will disperse the load across a wider area of the tank and essentially eliminate any cracking.

How would you do this on an OBS rear tank? I do see your point tho

FrankTheTank said:

How would you do this on an OBS rear tank? I do see your point tho

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Cut out the skid plate in that area.