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Old May 3, 2007 | 10:34 AM
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Hvymtlc5's Avatar
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From: Lake Ozark, MO
Default Crack

I have a 2 inch fiberglass crack just behind the sill plate (pass side) on my 78. What would cause that. Frame is solid , no rust. Hope it's just too much torque from the 454
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Old May 3, 2007 | 01:27 PM
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Young69Owner's Avatar
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From: Henrico VA
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Never heard of an engine doing that, but maybe a ball hit it? Even that wouldn't be enough. I say something hit it. I'd stick a strand or two of fiberglass underneath it and go from there.
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Old May 3, 2007 | 01:40 PM
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when you say sill plate i think of the lower door jamb, if this is where
you mean is it possible that someone slammed the seat belt buckle
in the door?

i know with my 78 i have to be really careful because
the passengers side does not retract sometimes and i almost
caught myself slamming the door on it.
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Old May 3, 2007 | 02:36 PM
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you mean is it possible that someone slammed the seat belt buckle in the door?
Never thought of that..since it is inside the door...very well could have been caused by that...I was worried about some body flex somehere......
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Old May 3, 2007 | 03:23 PM
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Typically,the C3's get stress cracks in the radius corner openings at hood...If you race in autocross like I did years ago with stiffer suspension,only cracks I got were in the lower spring pockets at crossmember and once broke my drivers seat slide in half...

Rich
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