[71corvette]

I am installing a TCI mustang II crosmember in my 50 chevy pickup and have a question on the frame boxing plates. are they welded on the inside edge of the rails keeping everything flush or are they welded to the outside edges of the frame rail? the instructions are not very clear

[powerrodsmike]

There was a thread here recently about that very subject..

TCI 35-40 Ford front boxing plates..


Lotsa stuff to read about it there.

Later, mikey

[CamSweet]

That was my original post and I took to the suggestions. The crossmember is slightly wider that the frame rails, so inside, outside, flush, was a moot point. I was going to have to trim it either way. My situation was made a little more complex by the fact that in that area of the frame, there's two "C channel" frames together, one inside the other. I fitted the boxing late inside the frame rails but slightly "proud" of the edges to give lots of edge to weld to. As described in the attached thread. The frame rails were not exactly straight in that area so I aligned the plate where it was most straight and tacked it in, snugged it up and welded it where it wasn't, stiched it togther, finish welded it completely and ground a nice radiused corner. Sorry, no picture after grinding but can if interested. It turned out great!!!