If it was Kenworth Motor Truck company they would do the channel either inside or outside the frame, like was mentioned 2 posts above. It is the better way to go. And maintains the originality of the frame for some future owner of it. Car frames and truck frames are 2 different animals. That is why Kenworth will "Bolt" the channels together and not weld them, it allows some movement weld doesn't. If you don't know where the stress and strain is when welding you may just end up creating a high stress area, that at some point in time will crack and fail, you have to remember these old truck frames were designed to flex. Too much monkey see monkey do in the hot rod bussiness. And zero engineering, not mentioning the goofing up of parts that aren't being made anymore. If you desire to cut and box and weld. Start fresh with nice rectangular box steel and build a frame from scratch.
Last edited by Truckrolet; 05/18/2013 4:06 AM.
