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Frame question - True or False

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Old Feb 25, 2005 | 07:35 PM
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Default Frame question - True or False

I removed the frame from the body of my 69 vert. There is nothing left attached to the frame. Before I have it dipped, I wanted to have it checked for twist and/or bent. When I called some body shops a couple of them told me you need the load of the body on the frame to properly check it.

True or False
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Old Feb 25, 2005 | 07:48 PM
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The frame flexes a lot with the engine and the body installed, you can see the gap at the door opening when you lift the front for example... however, the shop should be able to determine if the frame is bent or otherwise damaged.....

They could just place some weight on the frame and simulate the body and engine weight .... ??? ...
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Old Feb 25, 2005 | 07:53 PM
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Default Frame flex

What these guys are saying is probably true. But I doubt they are smart enough to actualy calculate the difference. Other wise they would have performed a little weight transfer calculations and never mentioned it to you. That would be what a good frame shop would do.
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Old Feb 25, 2005 | 08:14 PM
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I guess it depends on what book they are reading. The collision repair books probably have the whole car figured into the measurments. Maybe the GM service manual has the bare frame dimensions? Joe
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Old Feb 25, 2005 | 08:22 PM
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i don't know why it would prevent them for checking that it is symetrical and square.
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Old Feb 25, 2005 | 08:30 PM
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All they have do is put the frame on the frame machine....the machine has strategical points....measurements are made from these points to determine if the frame is true or if it needs to be straightened. If the frame sits squarely on these points, the frame is true.
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Old Feb 25, 2005 | 08:35 PM
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Originally Posted by ckerch
I removed the frame from the body of my 69 vert. There is nothing left attached to the frame. Before I have it dipped, I wanted to have it checked for twist and/or bent. When I called some body shops a couple of them told me you need the load of the body on the frame to properly check it.

True or False
Thats their way of saying they don't need or want your money.
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Old Feb 25, 2005 | 08:38 PM
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Originally Posted by joe73vette
I guess it depends on what book they are reading. The collision repair books probably have the whole car figured into the measurments. Maybe the GM service manual has the bare frame dimensions? Joe
I did find dimensional measurements in the GM specification manual but does not state loaded or unloaded. I am assuming it is unloading since the picture shows a bare frame.

Another body/frame shop told me to level the front two rails and check the level in the rear. That supposedly will tell me if it is twisted.
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Old Feb 25, 2005 | 08:38 PM
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You might give Gary Crump a call at Caledonia Classics a call at 1-888-245-5224. He did what you are wanting to my frame and seems to know what he is doing. He's in Belding. Michigan, which may be close to you.
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Old Feb 25, 2005 | 08:39 PM
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You might give Gary Crump a call at Caledonia Classics at 1-888-245-5224. He did what you are wanting to my frame and seems to know what he is doing. He's in Belding. Michigan, which may be close to you.
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Old Feb 25, 2005 | 08:48 PM
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Thanks
I will give him a call.
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Old Feb 25, 2005 | 09:00 PM
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Originally Posted by GDaina
All they have do is put the frame on the frame machine....the machine has strategical points....measurements are made from these points to determine if the frame is true or if it needs to be straightened. If the frame sits squarely on these points, the frame is true.
Thanks
That is what I thought. Hopefully if they have that equipment they will be able to straighten it if needed.
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Old Feb 25, 2005 | 10:39 PM
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Out of curiosity, how much does it cost to check the frame?
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