I am in the process of installing an under bed fuel tank in my 1950 3100 Chevy Truck. The tank came from the Truck Shop in Orange CA and produced my CounterParts. I was told that I would not need to move the rear brake line support. That turned out to not be true. Live and learn. So the bracket is removed and I will relocate it, not really a big deal.
Is there an installation for this gas tank somewhere on the internet?
But now I have other installing questions. My general question is can I drill the holes now, not having the bed in place? I am thinking no. It would have been nice if the brackets were slotted to allow some left to right positioning.
Next, I only need one port out of the tank to feed the fuel pump. There are two, why? There is also a port on the top of the tank. Is this for some sort of breather?
Any suggestion on setting up a breather?
Schematics welcome.
Last edited by ChevyDarren; 01/18/20217:15 PM. Reason: Added some pictures
Darren Current Project - 1950 3100 5 Window with a rebuilt 216 and 3 speed trans
Martin '62 Chevy C-10 Stepside Shortbed (Restomod in progress) '47 Chevy 3100 5 Window (long term project) ‘65 Chevy Biscayne (Emily) ‘39 Dodge Business Coupe (Clarence) “I fought the law and the law won" now I are a retired one! Support those brave men/women who stand the "Thin Blue Line"! Hug a cop! USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
The mistake that was made on my installation was the side brackets were installed on top of the frame rails instead of under. So if I need to remove the tank I have to take the bed off or replace the bed wood. Which BTW I would like to do that. On mine, the extra line I was told is a vent.
Ron, The Computer Greek I love therefore I am. 1954 3100 Chevy truck In the Gallery 2017 Buick Encore See more pix 1960 MGA Roadster Sold 7/18/2017
Yes, the top center hole is where the sending unit goes. I will install the tank so it can be "easily" dropped. There is nothing easy about it because the leaf springs get in the way of the tabs used to bolt the tank to the frame. But with that said, that is good advice. The filler hole is in the lower left corner of the photo. It sure would be nice if someone had a layout of where the center of the filler spout should be positioned from the center point of the frame. I think that location is 17 1/16" from the center of the frame. That should land the 3" diameter filler plug assembly exactly in the center of the second board from the left bed wall. But is sure would be nice if the tabs on the tank were slotted so you could make any slight adjustments (left or right) necessary to hit the location spot on.
Darren Current Project - 1950 3100 5 Window with a rebuilt 216 and 3 speed trans
If you have room on the mounting flanges, just use a rotary file and make the mounting holes slotted.
Martin '62 Chevy C-10 Stepside Shortbed (Restomod in progress) '47 Chevy 3100 5 Window (long term project) ‘65 Chevy Biscayne (Emily) ‘39 Dodge Business Coupe (Clarence) “I fought the law and the law won" now I are a retired one! Support those brave men/women who stand the "Thin Blue Line"! Hug a cop! USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
Thanks for the pics! I always wanted to know where these tanks fit on a shortbed 3100. Now if they came with a side fill, that would be perfect. I always thought the bed fill was just a poor idea (picture you are hauling a full bed of furniture a long distance and have to unload it to fill up the tank!).
It should be easy to get a fill tube through the rear fender with a weld in door for a side fill. Just I have not seen a tank that offers the side fill.
1951 Chevy 3100 "Project for my Wife" - Jigsaw Puzzle 1969 Camaro SS350 convertible 1969 Camaro 327 convertible
one would think with all of the ad trucks that have been built over time there would be plenty of information out there on how to do these installations from fuel tanks to front suspension to brake booster/master cylinders swaps. It seems to me the companies that sell these kits are sooo skimpy and vague on instructions it's almost pitiful.
I believe LMC makes a side fill. Once I get this truck finished I never intend to haul anything in the bed again. So the bed fill makes good sense. Also the reason for having the tank under the bed and filling from the top is to preserve a those beautiful curves the 3100 series has. As will has getting the fuel tank out from behind the back seat! Now that I think back of all those times I rode in that truck and my grandfather had is pipe glowing. Not sure what was more hazardous, the second smoke, or the chance we could have both been blow to pieces!
Darren Current Project - 1950 3100 5 Window with a rebuilt 216 and 3 speed trans
We do a lot of gas tank relocations on all kinds of street rods and I think my favorite for AD trucks is the early Chevy Blazer tank. The Mustang tanks fit well but the Blazer has rounded top corners that match the curve in the spare tire cross member. The filler tube on the tank is angled up and to the left so we weld in a motorcycle pop up flush fit gas cap in the back of the drivers side rear fender. All in all a tidy installation. If the pop up cap is painted body color it's nearly invisible.
