Installing torsion box
 

When installing aftermarket torsion boxes, is the outer flange suppose to be even with the inner rocker's lower edge?

Any body have any pictures of this area? Mine where completely missing when I got my Blazer. Mainly looking for pictures from underneath looking out at where torsion box meets the inner rocker panel.

Re: Installing torsion box
 

Technically yes, but if it's out a bit it won't matter. My original torque boxes hung down 1/4". These truck had huge build tolerences.

Re: Installing torsion box
 

Comparing my inner rocker panel to an original on my dad's cab shows mine is a 1/4" short.
My torsion box is hanging about 3/8" under the inner. If the inner was a 1/4" longer, it would only be an 1/8 off.

The torsion box is up against the front cab support now, and sitting flush with the floor rail.
The end cap will fit, but will have to wallor out some holes to get all the bolts in.

I am going to trim these drain channels so the 2 fit flush together

Re: Installing torsion box
 

I wouldn't trim it. See if you can place a floor jack under the tortion box to raise it a bit. I would bolt the end cap on first. Those oval hole are there so that you can MIG through them to weld to the inner rocker. Either way will work, but will be more factory looking from the underside if you don't trim it .

Edit; The torsion box should be last thing that gets welded in. I would fit and weld the outer rocker panel in place first.

Re: Installing torsion box
 

Not sure if this is the view/angle you need, but it IS the outer edge of the torsion box where it meets the inner and outer rockers to make the "pinch weld-looking" seam.

Re: Installing torsion box
 

The only thing I am thinking of trimming is the two notches in the inner rocker. I assume they are drains for the inner/ outer rocker cavity. But they prevent the inner rocker and torsion box from fitting flush together.

I have a jack under it to get it where it is now. I would have to clearance things in order to get it any higher. Based on measurements, I am convinced my inner rocker panel is a 1/4" short (heighth) and making it look like the torsion box is to low.

The end cap is bolted up minus 2 holes that need wallored. My experience with all of this aftermarket metal is holes are going to need wallored out.

Re: Installing torsion box
 

Interesting picture. Maybe I am seeing it wrong, but it looks like the bottom of your ovals are missing.