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Rear suspension question

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Old Jun 20, 2008 | 08:28 AM
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Default Rear suspension question

On my 80 vette I have just justed noticing a thumping noice from the rear of the car when I am slowing down to a stop, and as well as a rough riding bounce coming from the rear. I changed the shocks last night, but it did not help. It feels like a spring is bad. Where do I start?
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Old Jun 20, 2008 | 08:37 AM
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Is the thumping continuous or do you just get one thump when you apply the brakes?

The bounce, does it happen as you drive straight and flat or is it like a wave machine as you go over uneven road?

Have a look at the spring and half shafts. Can you see any broken leafs? Are the half shafts horizontal to the pavement or do they angle up, or down from the rear end?
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Old Jun 20, 2008 | 08:43 AM
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Have a good look at your rear tires, also. Tread separation can cause these symptoms.
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Old Jun 20, 2008 | 08:54 AM
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Also check the differential mount cushion front upper and lower.
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Old Jun 20, 2008 | 09:25 AM
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Originally Posted by bmotojoe
Also check the differential mount cushion front upper and lower.



I had a similar prob, and is was the read end tongue bushing.
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Old Jun 20, 2008 | 10:20 AM
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Originally Posted by Durango_boy
Is the thumping continuous or do you just get one thump when you apply the brakes?

The bounce, does it happen as you drive straight and flat or is it like a wave machine as you go over uneven road?

Have a look at the spring and half shafts. Can you see any broken leafs? Are the half shafts horizontal to the pavement or do they angle up, or down from the rear end?

The noice happens at low speeds. No different if I apply the brakes or not. I checked the leaf springs and the mount was a little loose so I tighten the three bolts, but no difference... The half shafts angle down from the rear end.....
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