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2011 CTS-V
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236 Posts
Installed mine tonight... haven't driven it yet as I have the rear diff bushing still to do but wanted to let you guys know that I had to shave off a little of a corner in order to get the bushing in then it went right in with the hammer as leverage trick.
 

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64 Posts
I had my revshift trans mount insert in for three days, loved how the shifter felt but couldn't stand the vibration around 3000 rpm. Rattled the shifter my seat and even the clutch petal. I had to pull it out and the car feels back to normal..
 

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05 CTS-V
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249 Posts
I had my revshift trans mount insert in for three days, loved how the shifter felt but couldn't stand the vibration around 3000 rpm. Rattled the shifter my seat and even the clutch petal. I had to pull it out and the car feels back to normal..
Anything else possibly misaligned? Sagging driveshaft? Old Motor Mounts? The vibrations go away over time. I have almost 0 vibes now, after the Revshift trans install, motor mounts, and got rid of the stock driveshaft.
 

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64 Posts
I could not wait for it to go away. didn't like the feel or sound. I did not have any misalignment problems before the install any just pulled it back out by just jacking up the trans and not unbolting anything. Now the car is back to normal.
 

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I could not wait for it to go away. didn't like the feel or sound. I did not have any misalignment problems before the install any just pulled it back out by just jacking up the trans and not unbolting anything. Now the car is back to normal.
I know that we discussed this before, but I'm sticking to my guns: that was a mistake. It *will* be better than stock if you stick through it. Unless your car has less than 10,000 miles, you almost certainly have a misalignment with the stock mount.
 

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'04 CTS-V (No Moonroof) - Gone but not forgotten
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58 Posts
I have the vibration as well, but it is much lower RPM.

I am waiting for it to go away, but shifter feels better most of the time.
Mine was installed a few days ago, and I most notice a vibration in the 1,250 - 1,900 rpm range, does not matter if the car is moving or not; in what rpm range is your vibe most noticable?
I must say that getting into 1st & reverse is sooo much easier now. I'm still on stock motor mounts (but have the revshift bluesin hand). I'm kinda waiting for the stock MMs to fail, two mechanics have told me they're still fine....
 

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Without a caddy
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175 Posts
Going to be installing the insert sometime this week hopefully along with the SFI balancer. Have it in hand and ready to go in. I will post results when done as well. Already has CS motor mounts installed. Right now the trans definitely has some sag to it. Finding gears is not to much of a problem but the shifter is extremely notchy! Hoping to smooth that out some.
 

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Without a caddy
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175 Posts
Ok couldn't help myself I had it on the bench and couldn't wait for the other stuff to get here. I installed it tonight and took it for a drive. Shifter was real notchy before and that has smoothed out quite a bit Car seems to shift much better especially 2nd 4th and 6th for me at least. It had no trouble getting reverse but now it is even better. There are vibes. But if I cared about vibes I wouldn't have bought a car like this in the first place. Maybe they will get better with time and maybe they wont either way no biggie since they are minimal. +1 on the block insert. For the price I think it was a wise investment.


Sharpening the sword so to speak.
 

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2005 CTS-V
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33 Posts
For comparison's sake, I also installed the revshift insert, and couldn't handle the vibrations, took it out and installed a CS trans mount after about a month. The stocker with insert made the biggest difference getting into first and particularly reverse, but the vibrations and added noise were more than I could handle (I have UMI motor mounts.) CS mount feels better than the sagging stocker, but it doesn't go into reverse easily like it did with the revshift insert.
 

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3 Posts
I just installed the Revshift motor mounts and the insert. My stock motor mounts were completely toast. I am having an issue with 2nd and 4th gear. The shifter knob hits the shifter bezel when pulling 2nd and 4th and makes it hard to get into those gears in a hurry. Help...
 

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CTS-V
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18 Posts
I have had my V for about 2 months and thought i would add my 2 cents to this subject.

I replaced my motor mounts last month with the revshift blue mounts, then installed the transmission mount insert the next weekend. I noticed an increase in sound in the cab similar to some of the previous posts. Some additional vibrations were felt initially, mainly in the floorboard and pedals.

The vibrations did reduce to an unnoticeable point after a few weeks, but the noise is what I find intolerable. It can be heard at almost all rpm, and is similar to an exhaust sound except higher pitch. I also now hear more transmission noise, for example, gears clicking during shifting and spinning sounds while in neutral.

I have no complaints against the revshift insert as a product, it really gave the shifting a much better and more solid feel. However, vibration and noise is an individual preference, and for me it is a little too much. My V is stock and my daily driver, so comfort slightly outweighs performance in this area.

I read some other threads about Creative Steel's "caddy soft" mount and some people who tried it with success in terms of vibration/sound. They don't make that mount anymore but have a new style mount that is supposed to be good for reducing the vibrations. I'm going to give it a try. It has a hardness of 40 versus the Revshift insert at 80. After I get it installed this weekend I will give a report back.
 

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2013 XTS
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265 Posts
I gotta wonder... I replaced the MM and added the trans insert with revshift blue. My shifts are smoother, engine doesn't sway anymore and no shutter at shut down. I have no added vibrations or noise... I wonder if there's some else that could be causing vibration/noise issues as some get it, and like me, some don't.
 

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CTS-V
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18 Posts
I few words about the Creative Steel mount. It appears to be good quality in its construction. The polyurethane is softer, it gives a little when I push on it hard with my fingernail, the Revshift I couldn't make an indention. This is logical as the CS mount is 40 hardness and the Revshift is 80. The holes properly aligned with the transmission and the studs on the bottom were straight, aligned easily in the support and had plenty of length.

PLEASE NOTE: I am not saying the Revshift is a poor product or inferior construction! I am completely satisfied with their motor mounts and am considering using some of their bushings.

I installed the the transmission mount and tested it out. The quality of the shifting is still good and it goes into reverse easily. There are no new or noticeable vibrations, similar to the revshift once it "broke in."

The biggest difference is in the sound. There is no more spinning sound from the transmission or gear clicking sounds as I mentioned in my earlier post. The car is much quieter throughout the RPM range, though not back to the Cadillac quiet with the original mount. I can hear the radio better at highway speeds and don't have any reverberating or droning sounds.

The important thing is that, for my use, it is quiet enough. I think I had realistic expectations. I did not expect to obtain stock sound levels, but rather reduce the noise to a level tolerable to me. If this was a pure play car or a track car these would not have been issues for me. The CS mount gave me a good blend of accurate shifting and low noise/vibration levels.

Hope this helps anyone debating the two and what they are using it for!
 
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