transmission crossmember

[N2TRUX]

Originally Posted by NZSquare

I have read on here before that some feel the need to tie the frame rails together top and bottom, I measured mine (cab on, fully assembled) with the stock crossmember in and out and got no deflection.

It might not be enough to cause concern, but it is there. On my 77 when it still had the stock crossmember we pulled it for some work. I had to use a prybar and BFH to get it back in place. Trust me, the frame does flex there.