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What is a pinion snubber?

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Old Apr 8, 2017 | 09:08 AM
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Default What is a pinion snubber?

My '72 has a slight vibration and I think I've done everything to cure it, but someone third-hand suggests the pinion snubber. Somewhere in the rear suspension. Can someone point it out to me? Thanks.
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Old Apr 8, 2017 | 09:26 AM
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Hi PB,
The pinion snubber is the heavy rubber bushing at the forward end of the differential mounting bracket.
It cushions the slight movement of the differential.
Regards,
Alan

It's made up of 2 rubber bushings…. one is hidden in this photo. It's above the crossmember bracket.


Last edited by Alan 71; Apr 8, 2017 at 11:27 AM.
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Old Apr 8, 2017 | 11:08 AM
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It might cause a vibration but more likely a thumping noise (ask me how I know ). Chances are it's deteriorated and needs to be replaced though.
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Old Apr 8, 2017 | 12:43 PM
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I have these I believe to be genuine GM/NOS #3795333 and 3788637 available, if you or anyone else is interested send a PM
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Old Apr 8, 2017 | 12:45 PM
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The pinion snubber bushing will have no effect on a rotating vibration problem...unless it is completely shot or missing.
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