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Old 03-30-2006, 11:40 PM   #1
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Join Date: Apr 2004
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Car: 86 z28,
Engine: 1978 350 bored 0.30 over
Transmission: 700r4

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subframe repair

The subframe around the tranny xmember is rotted. I was just wondering if anyone out there has had this problem and if so what you did about it. I really don't want to scrap this body just for that as this is the only thing wrong with it.
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Old 03-31-2006, 05:01 AM   #2
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well... you will have to cut out the damaged section and replace it with a section cut from a non-rusty car. adding additional bracing might be a good idea as the graft may not be as strong as the original solid piece. i am of course reffering to SFCs.
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Old 03-31-2006, 09:37 AM   #3
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My Sons first car had the same problem. We cut out the rust then cut a piece of square tubing to fit. Cut out the back of the square tubing so it was more like a piece of channel iron then drilled for the transmission mount holes and welded nuts inside the channel. Then welded it solid into the car. If you are not a welder or don't have a good welder do the fabrication yourself then take it to a welder and get them to weld it in. It will be better than new.

Ric
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Old 04-03-2006, 05:17 AM   #4
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I've fixed one where the extra forces placed on it by a t56 crossember caused it to crumble and fall appart... ended up stitching the stock stuff back together and then welding some reenforcement onto it...
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Old 04-03-2006, 05:17 AM
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