In Bed Filler Location - The 1947 - Present Chevrolet & GMC Truck Message Board Network

thumper56 · 02-14-2017, 08:01 PM

After getting my 56 C3100 on the road last spring, realized I am just too tall (6'4") to drive comfortably. Always getting a "Charlie Horse" in my right calf after a short time. So first step- move the tank to under bed so I can move the seat back an inch or so.

Now have a tank, filler and sending unit from Brothers, and all seems straight forward enough for even me to understand. Only issue I am thinking about is how to mark for placement of the filler BEFORE drilling the hole in the bed. Yep, bed is already on and the floor is Cherry that I obtained from a local logger friend here in VT. Milled it, dadoed it so I'm pretty fond of it and don't want to screw it up!

So...

1) I am thinking I will place the tank under the frame rails temporarily mount it.

2) Then take a thin piece of cardboard and wrap around the filler tube on the tank, then pencil the circle on the floor bottom.

3) Remove the tank

4) Center drill the marked hole with 1/4" bit

5) Hole drill from the top using the 1/4" hole as the pilot guide.

6) Reinstall tank and pray it all worked.

Hopefully I have enough room for my tracing the circle from below. Pain in the Keeester, but can't think of a better way.

If anyone has done this filler neck locating with the bed already mounted, please give me your ideas!!!

Thanks for bearing with this lengthy post!

mdpaulson1 · 02-14-2017, 08:41 PM

being as you have just finished the bed, why don't you just take out two of your metal strips and the piece of wood where the filler goes and then mount the tank. Now you can exactly measure the location of the filler from the existing planks on either side and now drill out the filler and install it back in.
just saying

mr48chev · 02-14-2017, 08:51 PM

That would probably be quicker in the long run than trying to figure it out from below.

*Jesse Z* · 02-18-2017, 04:26 AM

Always start by drilling a small hole. Then you have room to enlarge it any direction to compensate if you're off a bit.

I did mine basically the way you described and it was still off by a surprising amount. Fortunately I did the above and saved it.

02-14-2017, 08:01 PM	#1
thumper56 Registered User Join Date: Jun 2013 Location: Bennington, VT Posts: 42	In Bed Filler Location After getting my 56 C3100 on the road last spring, realized I am just too tall (6'4") to drive comfortably. Always getting a "Charlie Horse" in my right calf after a short time. So first step- move the tank to under bed so I can move the seat back an inch or so. Now have a tank, filler and sending unit from Brothers, and all seems straight forward enough for even me to understand. Only issue I am thinking about is how to mark for placement of the filler BEFORE drilling the hole in the bed. Yep, bed is already on and the floor is Cherry that I obtained from a local logger friend here in VT. Milled it, dadoed it so I'm pretty fond of it and don't want to screw it up! So... 1) I am thinking I will place the tank under the frame rails temporarily mount it. 2) Then take a thin piece of cardboard and wrap around the filler tube on the tank, then pencil the circle on the floor bottom. 3) Remove the tank 4) Center drill the marked hole with 1/4" bit 5) Hole drill from the top using the 1/4" hole as the pilot guide. 6) Reinstall tank and pray it all worked. Hopefully I have enough room for my tracing the circle from below. Pain in the Keeester, but can't think of a better way. If anyone has done this filler neck locating with the bed already mounted, please give me your ideas!!! Thanks for bearing with this lengthy post! __________________ 1956 C3100 1930 Ford Model A

02-14-2017, 08:41 PM	#2
mdpaulson1 Registered User Join Date: Feb 2015 Location: concord ca Posts: 170	Re: In Bed Filler Location being as you have just finished the bed, why don't you just take out two of your metal strips and the piece of wood where the filler goes and then mount the tank. Now you can exactly measure the location of the filler from the existing planks on either side and now drill out the filler and install it back in. just saying

02-14-2017, 08:51 PM	#3
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,342	Re: In Bed Filler Location That would probably be quicker in the long run than trying to figure it out from below. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

02-18-2017, 04:26 AM	#4
Jesse Z Account Suspended Join Date: Aug 2016 Location: Florida, USA Posts: 290	Re: In Bed Filler Location Always start by drilling a small hole. Then you have room to enlarge it any direction to compensate if you're off a bit. I did mine basically the way you described and it was still off by a surprising amount. Fortunately I did the above and saved it. Attached Images Last edited by Jesse Z; 02-18-2017 at 04:34 AM.



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