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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: hotrod24 on April 13, 2008, 12:03:18 am

Title: dual gas tanks
Post by: hotrod24 on April 13, 2008, 12:03:18 am
ok i have dual gas tanks on my truck and i dont have a way to switch them i was going to wire up a switch and use them but i decided to just go with one so how would i take the passenger side tank off and just use one of them
Title: Re: dual gas tanks
Post by: 77c15 on April 13, 2008, 05:43:41 am
You can still get the switch from GM. Check the local dealership before you go removing the "other" tank and have to remove/reroute the hoses, etc.
Title: Re: dual gas tanks
Post by: hotrod24 on April 13, 2008, 11:15:57 am
well you know 77 i dont have a hole to put a switch in i think who ever had the truck before me put dual tanks on it and forgot to put a switch in
Title: Re: dual gas tanks
Post by: VileZambonie on April 13, 2008, 12:37:57 pm
Hot rod, if you wanted to run 2 tanks you could mount a switch just about anywhere you want too. Look under the dash to see if the tank switch harness is there. Is the tank switching valve installed between the two tanks?
Title: Re: dual gas tanks
Post by: hotrod24 on April 13, 2008, 01:03:30 pm
yes every thing between the two tanks is there but i do not see a harness for the switch
Title: Re: dual gas tanks
Post by: 80stepsideguy on April 13, 2008, 02:23:01 pm
Dusty,
make life simple, tear that truck down to a bare cab, take everything and i mean everything off, the front clip, the bed, the doors, the electricial EVERYTHING and start over from scratch.Buying a truck in the condition yours is in i say start from the ground up.You`ll be chasing them gremlins for a long time unless you start from a clean slate.Take all the bolts, put them in bags, label them and put them in a box where you know they`ll be in.Same goes for the harness, label every connection and go from there.I say replace that harness and go with a painless performance harness.

thanks
pat
Title: Re: dual gas tanks
Post by: hotrod24 on April 13, 2008, 02:36:47 pm
pat that is exactly what am going to do when i get a shop everything is coming off but sense i dont have a shop would be a good idea to take the bed off and fix my gas tanks so i am just using one so i want have more to do when i get a shop
Title: Re: dual gas tanks
Post by: hotrod24 on April 14, 2008, 02:21:59 pm
well i made up my mine i am going with one gas tank where should i start i am going to unbuilt the bed and take it off and then i will convert to one gas tank
Title: Re: dual gas tanks
Post by: Captkaos on April 14, 2008, 02:26:15 pm
Use the one on the passenger side, You just need the hose to to connect to the tank and original lines.
Title: Re: dual gas tanks
Post by: hotrod24 on April 14, 2008, 02:37:26 pm
chris what is the difference in using the passenger side or the driver side i would like it to be stock
Quote from: Captkaos link=topic=8170.msg51877#msg51877  date=1208201175
Use the one on the passenger side, You just need the hose to to connect to the tank and original lines.
Title: Re: dual gas tanks
Post by: Blazin on April 14, 2008, 03:27:09 pm
Because the fuel lines run down the pasenger side. Make it eisier to hook up the tank instead of running mor eline to the other side.
Title: Re: dual gas tanks
Post by: Captkaos on April 14, 2008, 03:33:23 pm
What he said... :D
Title: Re: dual gas tanks
Post by: hotrod24 on April 14, 2008, 03:40:28 pm
what do i have to do to switch to one tank where do i start any advies

(http://i222.photobucket.com/albums/dd224/74chevy/103_0847.jpg)
Title: Re: dual gas tanks
Post by: hotrod24 on May 01, 2008, 06:20:52 pm
what is a good way to get the gas out of the filter
Title: Re: dual gas tanks
Post by: ccz145a on May 01, 2008, 07:51:33 pm
Back up a few feet and snap the pic again,and get a pic of the gas valve just infront of the xmember at the bottom of the photo, that is if it there. It's on the pass side. What is there does not look stock and need to see more. That is not a good place for the filter, it needs to be downstream of the fuel pump, near the carb.

EDIT** I just remembered that the xmember I am talking about is under the cab (my cab was off when I rerouted mine)

Just dump the gas in the filter, if you have to. But why do you need to? You could put it in your lawnmower.
Title: Re: dual gas tanks
Post by: hotrod24 on May 01, 2008, 08:05:13 pm
you know it is a funny thing i have a filter by the carb to what do i do

(http://i222.photobucket.com/albums/dd224/74chevy/14.jpg)
Title: Re: dual gas tanks
Post by: Captkaos on May 02, 2008, 09:46:21 am
There should be lines running down the passenger side of the framerail and terminating before the tank.  On the same side should be your gas tank with a sending unit on the top.  take a hose and run it from the sending unit to the appropriate fuel line. 

What you have isn't factory, it should have metal lines across the back....
Title: Re: dual gas tanks
Post by: ccz145a on May 02, 2008, 10:47:11 am
Quote
it should have metal lines across the back....

My '75 had factory rubber lines still in place and in good shape when I pulled the cab off last summer.

But your right in that this setup is not factory. Rubber lines can last a while in this area, they need to be fastened and protected correctly.

I like the hard line setup better, so before I put my cab back on I put on the set from my donor.
Title: Re: dual gas tanks
Post by: hotrod24 on May 22, 2008, 08:42:31 pm
today i took my passenger side tank off i know i should have took the drivers side off but for now i just wanted to take this one off and i said before that my passenger side tank did not work well i started looking and the hoses was cut off the only thing that was hooked to it was the ground wire oh and i took the gas selector off well i think that is what it is


(http://i222.photobucket.com/albums/dd224/74chevy/103_0909.jpg)

 
Title: Re: dual gas tanks
Post by: hotrod24 on May 23, 2008, 03:34:24 pm
hey what gallon is in are trucks i think i have a 16 gallon
Title: Re: dual gas tanks
Post by: VileZambonie on May 23, 2008, 05:23:44 pm
yes it's 16 gallon
Title: Re: dual gas tanks
Post by: hotrod24 on May 23, 2008, 09:01:16 pm
where could i get a sending harness for a gas tank
Title: Re: dual gas tanks
Post by: VileZambonie on May 23, 2008, 09:02:57 pm
What's a sending harness?
Title: Re: dual gas tanks
Post by: hotrod24 on May 23, 2008, 09:20:29 pm
sorry vile it goes to your sending unit that is in your gas tank and this is all that i could find but it is for 67-72

http://www.classicparts.com/prodinfo.asp?number=52-817
Title: Re: dual gas tanks
Post by: VileZambonie on May 24, 2008, 07:10:52 am
For the sending unit it's just one wire.