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4/6/13 7:28pm - Original Message: 'My '79 Frame repair.. Something just don't add up.'
Former Member
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, - Canada

1979 Project car, 1999 Vert.

Joined: 12/8/2012
Posts: 2
First question.. Are all C3 frames supposed to measure up exactly like they are supposed to in this diagram?

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I'm having an issue right now regarding the body mount brackets. I measured, marked, measured, marked and scribed again the EXACT location of the passenger side bracket. I cut the old one off and tack welded first to make sure all lined up correctly and when I was assured it was the exact spot of the old one, I finished the welding job.

Click the image to open in full size.

So on to the driver side. Well the entire section where the bracket was was rotted out so I had removed and replaced that section. For this reason I had on previous position to go by. So I went by the diagram up top, did my measurements, (I also measured from the two small indents at the side of the brackets) and tacked the bracket on the exact spot I want it. 

Click the image to open in full size.

So.. I get my measuring set up again and the one I just tacked on is exactly 17 1/8" from the 3/4" gauge hole to the centre of the bracket hole. Just as the diagram shows on the driver side. But.. I then go and measure the passenger side bracket and it is 17 5/8" from the gauge hole. That's a half inch further to the back of the frame. I don't see a measurement for the passenger side but one would assume they would be in the exact spot wouldn't one??? As I said though, I put the bracket in the exact same spot as the one I took off. 

Here is how it's looking though. Still have to repair the box section and rear frame on the driver side but I really hope I don't have to remove the bracket I have fully welded on... Is it possible both sides aren't the same? Thanks for any advice or opinions... I'm posting this from my work computer so I'm not sure the pictures will show up.  If not, I'll ad them tomorrow.  

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