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Old Jun 16, 2011 | 01:50 PM
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Are C5 and C6 corvettes unibodies? What exactly is a unibody?Anyone ever wrecked a corvette(c5/c6) and fixed it or fixed a wrecked one? Any problems that you run into with the frame? Any help is greatly appriciated!
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Old Jun 16, 2011 | 01:51 PM
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Originally Posted by taknute
Are C5 and C6 corvettes unibodies? What exactly is a unibody?Anyone ever wrecked a corvette(c5/c6) and fixed it or fixed a wrecked one? Any problems that you run into with the frame? Any help is greatly appriciated!
Corvettes have always been FULL FRAME cars-want to know what a UNIBODY is? Try GOOGLE!
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Old Jun 16, 2011 | 02:36 PM
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As already stated, Corvette's have always been produced on a frame. A unibody is basically a car constructed without a frame as you would think of a frame. It uses the body and panels as the frame of old.

As far as repairing a Corvette that has been in a wreck, that is a hard question to answer. If the frame has not been bent then it can be as simply removing the damaged parts and replacing them or repairing the existing part with fiberglass matt and resin. I repaired the rear quarter panel on my '66 many years ago.

How ever if you are not well schooled in body repait, I would suggest leaving it to a professional.
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Old Jun 16, 2011 | 02:43 PM
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Starting with theC5, Corvette frames have been HYDROFORMED-makes fram repair a little more complicated.
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Old Jun 16, 2011 | 02:49 PM
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A unibody really means the body and it's underpinnings act as the frame and hold the car together and provide its strength and rigidity. This saves weight since the frame normally weighs so much. But with a fiberglass or plastic body, it would be very hard to do and have enought strength.

It's mostly trucks that have frames now days.
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Old Jun 16, 2011 | 03:56 PM
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Originally Posted by dougbfresh
Starting with theC5, Corvette frames have been HYDROFORMED-makes fram repair a little more complicated.
Ok so the corvette is a full frame car but what does Hydroformed mean?
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Old Jun 16, 2011 | 05:26 PM
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Originally Posted by taknute
Ok so the corvette is a full frame car but what does Hydroformed mean?
The frame rails shape is formed by pressure injection instead of being stamped and welded.
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Old Jun 16, 2011 | 05:34 PM
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Originally Posted by taknute
Ok so the corvette is a full frame car but what does Hydroformed mean?
a great explanation of the process (and the innovation at the time) can be found in the book "all corvettes are red". it should be required corvette reading, particularly if you have or are considering a C5, or just a corvette "history" buff. great insight into GM and the development (or lack thereof at times) of the C5 into a production vehicle.
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Old Jun 16, 2011 | 06:32 PM
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Interesting....I'll try to look into it more..do they sell that book at bookstores or only online?
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Old Jun 16, 2011 | 06:38 PM
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Sigh.........Yes unfortunatly I have Dukes of Hazzard one of mine into a car. Still have nightmares about my baby flying in the air and coming down on a 2010 Caddy......Long Story.......But she was totaled so i didnt get to fix her. Rant over, man i feel so much better now... Jay
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Old Jun 16, 2011 | 07:28 PM
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Originally Posted by 96mogt
Sigh.........Yes unfortunatly I have Dukes of Hazzard one of mine into a car. Still have nightmares about my baby flying in the air and coming down on a 2010 Caddy......Long Story.......But she was totaled so i didnt get to fix her. Rant over, man i feel so much better now... Jay
Shame...did you get another one to replace it though?
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Old Jun 16, 2011 | 07:55 PM
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Originally Posted by taknute
Interesting....I'll try to look into it more..do they sell that book at bookstores or only online?
A large bookstore may have a copy, but it is a pretty old book. You might have to get them to order one or try a place like Amazon.com or maybe even the NCM.
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Old Jun 16, 2011 | 07:59 PM
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All Corvettes Are Red would be a great read for you! I'd look for a copy on e-Bay.
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Old Jun 16, 2011 | 08:01 PM
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Starting with the C5 the metal frame is 'Hydro-formed' or in plain words, it goes into a tube and pressurized at 10.000 psi. The method of forming the frame is such that it doesn't deform or destruct the metal molecules and gives you a better frame in rigidity and consistent shape & then galvanized. But the book goes into much better an description.
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Old Jun 16, 2011 | 08:47 PM
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Originally Posted by killain
Starting with the C5 the metal frame is 'Hydro-formed' or in plain words, it goes into a tube and pressurized at 10.000 psi. The method of forming the frame is such that it doesn't deform or destruct the metal molecules and gives you a better frame in rigidity and consistent shape & then galvanized. But the book goes into much better an description.
I think the theory is with equal pressure from the inside a while forming, the thickness around the frame will be equal. Imagine an expanding ballon, the thickness on the surface of the ballon is equal as it expands.
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Old Jun 17, 2011 | 12:34 PM
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And with less welding involved, there's probably a significant savings in weight in addition to structural rigidity. To bad the C5/Z06 frame wasn't aluminum like the C6/Z06.
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Old Jun 17, 2011 | 07:47 PM
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interesting...i'll have to try to find this book..
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Old Jun 17, 2011 | 08:57 PM
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Originally Posted by taknute
interesting...i'll have to try to find this book..
You can frequently find "All Corvettes are Red" and "Corvette from the Inside" as a set for a good price on e-Bay.

Gives you great insight into both the C4 ("Corvette from the Inside") and the C5 ("All Corvettes are Red") and the inner workings of GM.
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Old Jun 17, 2011 | 09:03 PM
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I had a Chevy Vega which was a full unibody frame. That was just fine until I but a high HP V8 with an automatic transmission.

In a matter of months, the doors, hood and trunk gaps were all tweeked.
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Old Jun 27, 2011 | 09:06 PM
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Originally Posted by taknute
Shame...did you get another one to replace it though?
Yes sir i did. I just recently picked up a Z06!! Love it!!! Jay
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