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Originally Posted by Bowtiefreak
I would like to use the pipe method shown above and was wondering what the proper location would be on a 67-72 truck seeing how you can't put it directly over the axle as described by XXL because its not square to the axle line.
I would be useing some 5 or 6" pipe.
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Yes, you put it directly over the axle C/L. Once installed, the c-notches are parallel to the rear end housing.
For mine, I took the shocks off & the coils out so ther rear end could be raised until it hit the frame. Using a level, I marked the frame for both sides of the axle (front/back). I split that in half & regarded that as my axle C/L & scribed a line on the top, bottom, & outside of the framerail for easy visual reference.
I then measured & scribed the C/L of the c-notch itself, aligned the 2 scribe marks together, & traced the area that needed to be cut out.
The difference on yours will be the need to cut the width of the c-notch longer because the frame staggers vs. being straight. Once it's welded in, simply trim off the excess from both the inside/outside of the frame.
FWIW, if I would have followed the instructions that came w/my bolt-in c-notch kit, the notch would not have been centered because the instructions had you measure from a factory hole on the side of the frame when determining the C/L for the c-notch. My measurement indicated it would have been almost 1" off center.