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Opinions on the CS Diff Block when doing the Diff Bushing?

Old 10-08-2013, 02:40 PM
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Default Opinions on the CS Diff Block when doing the Diff Bushing?

Does it help extend the life of the CS Diff bushing?

Any drawbacks such as vibration/noise/squeaks?


My factory bushing lasted almost 10K miles and the 'clunk' is back, so this time I would like it to last quite a bit longer.
Old 10-08-2013, 04:41 PM
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the clunk may lessen but the whine will never go away
Old 10-08-2013, 09:38 PM
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I miss the OEM bushing. The rev shift bushing transmits a lot of whine
Old 10-09-2013, 06:26 AM
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I wonder how the CS differential block with the stock bushing would be?
Old 10-09-2013, 08:57 AM
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the revshift bushing has not created any whine for me. its a preference thing. bottom line is the block cant hurt. but the bushing is a must IMO.
Old 10-09-2013, 10:27 AM
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Bushing and block worked well for me when I was running them. Didn't notice any noise and helped with the clunk.
Old 10-09-2013, 10:51 AM
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When I installed the revshift bushing and cs block, the whine was a little more distinct but the clunk and sloppy clutch-out feel went away 100%. At that time I asked the same question but ended up with the revshift bushing instead of a new stocker simply because installation is so much simpler. I would guess the block transmits a good amount of whine simply due to the direct physical contact, but admittedly never did a side by side. I think I made a thread at the time and two members said they had the block and stock bushing in there with 'no issues' but I'm not really sure what that means other than it works. Nobody really elaborated on noise or performance comparisons. I'm not sure it would be much different either way other than you'll never need to get under there again with the revshift bushing and that's worth the few bucks to me.
Old 10-09-2013, 11:05 AM
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Originally Posted by isis
When I installed the revshift bushing and cs block, the whine was a little more distinct but the clunk and sloppy clutch-out feel went away 100%. At that time I asked the same question but ended up with the revshift bushing instead of a new stocker simply because installation is so much simpler. I would guess the block transmits a good amount of whine simply due to the direct physical contact, but admittedly never did a side by side. I think I made a thread at the time and two members said they had the block and stock bushing in there with 'no issues' but I'm not really sure what that means other than it works. Nobody really elaborated on noise or performance comparisons. I'm not sure it would be much different either way other than you'll never need to get under there again with the revshift bushing and that's worth the few bucks to me.
The reason I ask is a new stock bushing was put in about two months ago before I owned it and I was thinking of adding a CS block because I don't want to replace a good bushing and maybe make the stock last longer.
Old 10-09-2013, 11:20 AM
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Originally Posted by 69stangscj
The reason I ask is a new stock bushing was put in about two months ago before I owned it and I was thinking of adding a CS block because I don't want to replace a good bushing and maybe make the stock last longer.
Makes sense to me. It would limit deflection in one direction anyway, so I'd think it should help. Plus it would give you a chance to check and re torque the bolts. Other peoples work makes me nervous.
Old 10-09-2013, 11:35 AM
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Lindsay Cadillac put the bushing in so, I feel better that it was done right.
Old 10-09-2013, 01:49 PM
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Reasonable assumption as well, imo
Old 10-09-2013, 04:58 PM
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Good Info there - Thanks to all!

So, any preference as to which bushing - CS or Revshift?

Either way my dealer will be doing the install, so is one any easier than the other?
Old 10-09-2013, 05:04 PM
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Originally Posted by 69stangscj
The reason I ask is a new stock bushing was put in about two months ago before I owned it and I was thinking of adding a CS block because I don't want to replace a good bushing and maybe make the stock last longer.
To clarify on my initial post, my 'factory bushing' was installed about one year ago while the car was still under warranty. ~10K miles later it's shot. I don't race the car or do burnouts, but I do enjoy some on-ramp blasts now and again.

Prior to this bushing, another new one was installed just before I purchased the car in January 2012 and it didn't last a full year (I do less than 10K miles/year).

So if you're going to install a block, get it done asap.
Old 10-09-2013, 05:33 PM
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Originally Posted by mhhamrhead
Good Info there - Thanks to all!

So, any preference as to which bushing - CS or Revshift?

Either way my dealer will be doing the install, so is one any easier than the other?
The revshift doesn't require a tool to press it in. I think it's a better design but never held a CS one in my hand so that's more assumption than experience. I think the lip around the edge spreads the contact area better and would mechanically be at an advantage.
Old 10-09-2013, 05:34 PM
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did the CS bushing and block. Feels a LOT better. A lot less to no clunk at all.
Old 10-10-2013, 01:44 AM
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I think CS just came out with a new line of bushings as an alternative to RS or OEM, supposed to be pretty nice!
Old 10-11-2013, 06:49 AM
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Yes, definitely do the block. I did the block only while waiting for the press tool for the bushing and it cleaned up clunk.


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