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2005 Red CTS-V and a Silver 2005 CTS-V
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75 Posts
After doing the LS7 clutch kit from East Coast Performance two week ago, I order the revshift insert. I went to install it today, and my transmount looked brand new after 150k miles. I thought why not install anyway. Dropped the front of the Corsa exhaust and jacked up the trans as mentioned in this thread. I used the lube they sent as well as spraying "rubber lube" into the cavities of the mount. Used a 10" long 2X4 and placed it against the insert. About 10 blows later with an 8 lb. hammer on the 2X4, wala, it was in. I only have driven it about 9 miles home from my shop, but I like it a lot. Feels better, and a slight increase in trans gear whining, but it lessened after a few miles. I believe it to be a worthwhile mod since I am also doing the carrier modification with the windshield butyl in two weeks.
 

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2007 CTS-V
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1,002 Posts
Discussion Starter · #82 ·
On the stock mount, what holds the rubber to the metal plates ?

I have the insert in there, but 1st and Reverse do not seem to slide in like I remember when I first installed the insert. Trans has been replaced since; insert is still in there. Just wondering if the rubber is separating from the mount.
 

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CTS-V
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18 Posts
On the stock mount, what holds the rubber to the metal plates ?

I have the insert in there, but 1st and Reverse do not seem to slide in like I remember when I first installed the insert. Trans has been replaced since; insert is still in there. Just wondering if the rubber is separating from the mount.
Even if the rubber separated, it is all held together by gravity and that big center pin.
 

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2007 CTS-V
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1,002 Posts
Discussion Starter · #85 ·
Even if the rubber separated, it is all held together by gravity and that big center pin.
I kinda thought so; figured I'd check with you guys too though. Din't know if it could shift around or anything.
Seems as I'm slowing to a stop, if I push to 1st just before stopping it pops right in; if I complete stop there's just a little more effort needed.
No issues though, just curious. Thanks.
 

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2006 CTS V
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93 Posts
I just had my Revshift motor mounts installed and the trans mount insert,I have no added vibration or noise. Now my shifts are clean and its easy to find the gears. I still have some drive line slack but I believe its mostly due to the rear diff bushing which they said is toast, next on my list. So far I'm loving it, honestly it just made me aware of how bad it was before the swap. I had no clue since the car was new to me with 66k miles on it.
 

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2005 CTS-V
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167 Posts
I am also doing the carrier modification with the windshield butyl in two weeks.
Just a note on this, it might just have been generic terminology, but for anyone filling the driveshaft carrier bearing rubber bushing, you do not want to use a "butyl" material. You are looking for a polyurethane windshield adhesive. Butyl caulk was commonly used for sealing gasketed windows, but butyl has no physical strength in either the non-skinning or skinning variety. Again, it could have been terminology but I'm just clarifying for those looking into the mod.
-PJ
 

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2007 CTS-V
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1,002 Posts
Discussion Starter · #88 ·
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!
Do you think there is any difference in shifter movement between the CS Mount, and the RevShift insert ?

I'm less concerned with noise and more interested in smoothest fluid shifting.
 

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05 V
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103 Posts
What about the motor mounts and the rear diff. bushing, those new as well?
Yes revshift street motor mounts were put in as well, but I was told heat shields were not neccessary so they are probably toast next to my Kooks. I haven't had a chance to get under the car and check yet. Carrier bushing was replaced maybe a year ago.
 

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2007 CTS-V
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1,002 Posts
Discussion Starter · #94 ·
Update:

I swapped my stock mount with insert, out for the creative steel mount. (been in for a few weeks now; wanted to thoroughly test it before giving the update)

Gotta say I think it is the best of both worlds. I didn't like how the revshift insert made 1st and reverse feel better at the expense of a notchier 2nd and 4th.

Even after letting the insert "settle in" for a while (months) I like the sound with the creative steel better. I still hear the growl of the engine under load through it, but not so much droan as before.

Shifter feels nice and solid, and all my gears feel equally easy to move to.


The insert is not a bad product by revshift, I just favor this new mount more.
 

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Black 2004 CTS-V
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818 Posts
Update:

I swapped my stock mount with insert, out for the creative steel mount. (been in for a few weeks now; wanted to thoroughly test it before giving the update)

Gotta say I think it is the best of both worlds. I didn't like how the revshift insert made 1st and reverse feel better at the expense of a notchier 2nd and 4th.

Even after letting the insert "settle in" for a while (months) I like the sound with the creative steel better. I still hear the growl of the engine under load through it, but not so much droan as before.

Shifter feels nice and solid, and all my gears feel equally easy to move to.


The insert is not a bad product by revshift, I just favor this new mount more.
I think I'm gonna give the CS transmount a try. I currently have the RS insert in there and had to reverse the spherical cup in the base of the shifter to get it into reverse. Wasn't a problem until I reassembled my car. I use the Katech shifter.
 

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2,046 Posts
I'm not sure what Philistine means. I've had the cup in both orientations in the last couple of weeks, and the transmission shifted the same way both times. The problem with reversing the cup orientation is that 2nd, 4th, and 6th leave the shifter jammed up against the lip of the box. And you'll never be able to run an aftermarket driveshaft, since you have almost no clearance. As far as I know, there's no advantage to messing with the stock orientation.
 
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