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Re: Fuel Petcock Valve on a 53'
Scott Danforth #597743 Thu Dec 03 2009 03:09 AM
Joined: Nov 2009
Posts: 674
T
Shop Shark
When I bought my '53 1/2 ton GMC a couple weeks ago it came with a new gas tank with sending unit installed. When I pulled the seat forward to get a look at the old tank I noticed that the fuel line does not come out of the top of the tank like it does on the new tank. I climed under the truck and saw the fuel petcock just like wv hillbilly's. And it works good. So what year does my new tank fit?

Re: Fuel Petcock Valve on a 53'
twotone #597752 Thu Dec 03 2009 03:34 AM
Joined: Feb 2006
Posts: 444
J
Shop Shark
I will jump back in here, and say that most of the vendors carry a replacement valve. It is not the same as the original. If you want an original replacement try the swap meet. In the 5 years I have been on Ebay I haven't seen an original show up. Also like most hard to get parts they come with a premium price. As an example I purchased a NOS heater switch from a stovebolt member for 40 bucks. A week later the same switch on ebay sold for $75. So if you can deal with a member here, you generaly get a better price, and it gives another guy a few bucks to spend on their truck. Jim.

Re: Fuel Petcock Valve on a 53'
Jimmie D #597761 Thu Dec 03 2009 03:42 AM
Joined: Dec 2005
Posts: 2,597
B
Shop Shark
My 1951 chevy 3100 has the same shut off valve.Jim carter sells new ones,there not exactly the same but serves the same purpose.If you feel you need the original one,post an add in the parts wanted section.I'm sure someone will have an extra one.


"A house is built with boards and beams,a home is built with love and dreams"

Look deep before you leep !!!

"Everything is Everything"

"If I say a mouse can pull a house,Hitch him up"

My 1951 3100 Chevrolet
My 1951 Chevrolet Suburban Carryall

Re: Fuel Petcock Valve on a 53'
twotone #597780 Thu Dec 03 2009 04:10 AM
Joined: May 2001
Posts: 8,386
Extreme Gabster
Originally Posted by twotone
When I bought my '53 1/2 ton GMC a couple weeks ago it came with a new gas tank with sending unit installed. When I pulled the seat forward to get a look at the old tank I noticed that the fuel line does not come out of the top of the tank like it does on the new tank. I climed under the truck and saw the fuel petcock just like wv hillbilly's. And it works good. So what year does my new tank fit?


The new tanks are made to use the '54 and later sending unit with a top pick-up. They will fit in your '53 but you'll have to run a line to the new sending unit.

I'f you can save the old tank, I'd use it.

Some of the new tanks have a nut on bottom. From what's been posted here, that nut has bolt threads and the valve will not mate to it.


"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.
My TRUCKS website
Re: Fuel Petcock Valve on a 53'
Kaliforniaman #597837 Thu Dec 03 2009 06:14 AM
Joined: Sep 2008
Posts: 36
5
Apprentice
My 51 GMC has the same valve, it jst unscrewed from the tank, I beleive it's 1/8 pipe thread, I sand blasted it and cleaned it with carb cleaner to rmove any sand or junk that was inside , looks brand new, I ordered the new hose from The truck Shop for $10,,,


I am going nowhere fast and it's not taking me long to get there !!!!
Re: Fuel Petcock Valve on a 53'
51 GMC 100 #597870 Thu Dec 03 2009 01:36 PM
Joined: Mar 2002
Posts: 9,030
Master Gabster
The big trick working with the original valves is trying to get the valve mechanism to seal. They look like they had some sort of packing, like an old tap. The purpose of the valve was to allow a shutoff of the fuel for work on the line.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!
Re: Fuel Petcock Valve on a 53'
truckernix #597874 Thu Dec 03 2009 01:51 PM
Joined: Sep 2001
Posts: 30,471
ace skiver

If no original-style shut-off valve is available, I'd try to find an all-brass valve (maybe from Weatherhead-Eaton).

What are the sizes of the fittings?
What are the angles (straight or 90 degrees)?


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engines are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
Re: Fuel Petcock Valve on a 53'
Scott Danforth #597901 Thu Dec 03 2009 03:13 PM
Joined: Sep 2009
Posts: 10
5
New Guy
I have a 90% original 51 3100 5 window and it has the brass petcock on the bottom of the fuel tank . I have never tried to close this valve so I don't know if it even works wave

Last edited by john paterson; Thu Dec 03 2009 03:19 PM. Reason: 51 john

It's fun to drive and to work on. How much better can it get
Re: Fuel Petcock Valve on a 53'
Scott Danforth #597944 Thu Dec 03 2009 05:22 PM
Joined: Oct 2009
Posts: 8
K
New Guy
Thanks everyone! I have not checked a plumbing store. However, with the part number that Tim provided I found it on-line at the Obsolete Chevrolet Parts Company in Georgia.
www.obschevy.com

Thanks,
Steve


Steve
49' 3100 5-Window
Re: Fuel Petcock Valve on a 53'
Kaliforniaman #597969 Thu Dec 03 2009 06:54 PM
Joined: Aug 2005
Posts: 344
M
Shop Shark
This is a great site, I learned something new.


Allan
-----
1951 GMC 1/2-ton
Two 1953 Chevy 3100 5-window
Here's the most recent one
Synthetic Lubricants
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