67 Torque Box Install Question, Is Cutting Slot in Floor the Only Way to Install?

[1965GTFB]

This is on a 67FB
Using the heavy duty 2 piece(actually 3 piece if you count the gusset) PS torque box. Did a lot of searching but did not find any great how to install threads. Did see a 65/66 install post that talked about cutting a slot in the original floor board for the flange on the smaller torque box piece to slide up into then be welded from the inside.

Is cutting a slot in the original floor board the only way to install this piece? The floors are perfect so it's not like I would be cutting on them any way. What have you guys that have installed a PS torque box done?

Thanks

[Maxum96]

Originally Posted by 1965GTFB

This is on a 67FB
Using the heavy duty 2 piece(actually 3 piece if you count the gusset) PS torque box. Did a lot of searching but did not find any great how to install threads. Did see a 65/66 install post that talked about cutting a slot in the original floor board for the flange on the smaller torque box piece to slide up into then be welded from the inside.

Is cutting a slot in the original floor board the only way to install this piece? The floors are perfect so it's not like I would be cutting on them any way. What have you guys that have installed a PS torque box done?

Thanks

Yes. The top lip of the torque box is welded to the inside of the inner cowl piece on the passenger side. This is the same way the driver side is attached. It's a thin slot. And it would be just like the factory would have done had there been a torque box originally in the car on the passenger side.

[blkfrd]

I didn't do the slot. I remember drilling 3/8" or 7/16" holes in the floor and/or torque box and then bringing the piece right up flush against the hole and filling the hole to mimic spot welds.

[1965GTFB]

Originally Posted by blkfrd

I didn't do the slot. I remember drilling 3/8" or 7/16" holes in the floor and/or torque box and then bringing the piece right up flush against the hole and filling the hole to mimic spot welds.

So did you cut the turned up edge off the torque so you could get the box to be flush aginst the floor to weld it the way you did?

[Fstbk]

It sounds like he welded it to the floor? So now his box is hanging from the floor? I would cut the slot and do it right.

[1965GTFB]

One other, maybe dumb, question. I should weld the two pieces together before installing it as one unit?

[Heap64]

Normally it is much easier to install them in two pieces and clamp it and weld the two parts together after both parts are in place. I have never tried doing one with the floor in place.