Under Bed Tanks.... do any not hang low?

[Smittee]

I used a Boyd's tank as well. It is designed to bolt up to the bottom of the frame rails. I did it a little different. I took three 3/8-16 Hex Couplings and cut them in half. Drilled holes in the tank mounting flange. Marked the top of the frame rail where I wanted the tank placed. Note: I had to remove the rear cross member but I didn't like the setup anyway. It had been taken out before I bought it and someone welded it back in with little clearance between the rear of the bed and the cross member. I fabbed up a new cross member that I can take in and out since it is now bolted in. Have to be able to take the tank back out for paint!
I then marked the holes on the frame rails and welded the hex couplers in place. Plan to use stainless bolts and a rubber spacer between the coupler and the mounting flange. I think I gained about an inch and a half or so. I haven't put the bed back on yet so i am not 100% sure what will hang down. You can look on Boyd's Welding website to see photos of some installs though.
I will try to attach a few pix.

[FRCvette]

I would like to install a Boyd tank in my completed 70 stepper. Is it possible to install tank without removing bed? I have oak bed floor.

[Smittee]

Originally Posted by FRCvette

I would like to install a Boyd tank in my completed 70 stepper. Is it possible to install tank without removing bed? I have oak bed floor.

More than likely if you install it like Boyd's tank is designed to be fastened. They recommend bolting the flange up to the underside of the frame. The filler tube shouldn't interfere since it will sit lower anyway.
Maybe contact Boyd's directly, they should be able to give you a definitive answer. I don't really have any experience with a step side though, so travel at your own risk.

[BossHogg69]

Originally Posted by Smittee

I used a Boyd's tank as well. It is designed to bolt up to the bottom of the frame rails. I did it a little different. I took three 3/8-16 Hex Couplings and cut them in half. Drilled holes in the tank mounting flange. Marked the top of the frame rail where I wanted the tank placed. Note: I had to remove the rear cross member but I didn't like the setup anyway. It had been taken out before I bought it and someone welded it back in with little clearance between the rear of the bed and the cross member. I fabbed up a new cross member that I can take in and out since it is now bolted in. Have to be able to take the tank back out for paint!
I then marked the holes on the frame rails and welded the hex couplers in place. Plan to use stainless bolts and a rubber spacer between the coupler and the mounting flange. I think I gained about an inch and a half or so. I haven't put the bed back on yet so i am not 100% sure what will hang down. You can look on Boyd's Welding website to see photos of some installs though.
I will try to attach a few pix.

I did something very similar to this, also with a Boyd's tank, mounting the tank above the framerails to tuck it up more, and also made a removeable tubular rear brace like Smittee did. Had the tank powder coated satin black to 'hide' it even more, but being I'm running a roll pan in the back, it doesn't cover the tank up as much as a bumper does.