LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

Motor Mount Flip?

Thread Tools
 
Search this Thread
 
Old Mar 29, 2009 | 11:49 PM
  #1  
estical79's Avatar
Thread Starter
Teching In
 
Joined: Jan 2009
Posts: 13
Likes: 0
Default Motor Mount Flip?

Hi guys. Ive been seeing that a lot of you do the motor mount flip to your gxp. I was wondering a couple things before i become one of those followers.

#1 What will it do for me?
#2 What is the negative for doing it?
#3 Any suggestions otherwise regarding this mod

Thanks for your suggestion guys
Reply
Old Mar 30, 2009 | 12:10 AM
  #2  
Pauls325's Avatar
TECH Resident
iTrader: (1)
 
Joined: May 2008
Posts: 800
Likes: 1
From: Minnetonka,MN or Fargo
Default

the motor mount flexes less so the power gets to the ground faster
it takes ten minutes
reversible

-feel shifts more
-maybe some vibration
Reply
Old Mar 30, 2009 | 12:19 AM
  #3  
estical79's Avatar
Thread Starter
Teching In
 
Joined: Jan 2009
Posts: 13
Likes: 0
Default Vibration

When you say that you may feel a vibration, are you talking about in the steering wheel, or the entire car or what? Just wanting to know, since im one of those that is driven crazy by vibrations.
Reply
Old Mar 30, 2009 | 01:12 AM
  #4  
Panther427's Avatar
TECH Fanatic
 
Joined: Feb 2009
Posts: 1,401
Likes: 1
Default

Do you have Before and after pics of the flip. Been thingin about doing this myself
Reply
Old Mar 30, 2009 | 08:05 AM
  #5  
BuffaloSS's Avatar
TECH Addict
iTrader: (3)
 
Joined: May 2006
Posts: 2,421
Likes: 0
From: Buffalo, NY
Default

I doubt that you will feel a vibration with the OE mount flipped (actually, turned 90*)...I didn't. It's still very pliable rubber, so it still flexes...just not as much.

Here's a diagram of the MM turned 90*. Notice that the holes in the rubber are now top & bottom, vs. front & back. The solid piece of rubber that is horizontal helps to keep the bolt in the middle from moving so much, when before the bolt could be pulled into the hollow areas.



Regarding the job itself...have plenty of lube available, a large screwdriver, breaker bar, 15mm (?) deep socket, and another 15mm wrench or ratchet & socket.

Remove the dogbone by taking out the nuts & bolts from the engine mount & front motor mount. Reinstall one bolt inside the motor mount, tightening as much as you can. Install second nut on same bolt.

Lube up the edges of the rubber bushing, using the screwdriver to pry apart the edges to allow it to seep in between the rubber & metal housing. As with all tight situations, add lube as necessary to achieve final goal.

Take deep socket & breaker on 2-nut side of bolt, and wrench/short socket on bolt side, and push towards engine. Add lube if necessary while torquing on bushing. The inside edges of the bushing may be fused to the metal from the engine heat, so it needs to be lubricated.

Remove 2 nuts & bolt & reinstall dogbone.

Last edited by BuffaloSS; Mar 30, 2009 at 08:13 AM.
Reply
Old Mar 30, 2009 | 11:01 AM
  #6  
radorider03's Avatar
Launching!
 
Joined: Apr 2005
Posts: 283
Likes: 0
From: Springfield MO
Default

Yea what he said^. I didnt get a vibration from it.
Reply
Old Mar 30, 2009 | 01:01 PM
  #7  
Pauls325's Avatar
TECH Resident
iTrader: (1)
 
Joined: May 2008
Posts: 800
Likes: 1
From: Minnetonka,MN or Fargo
Default

Yeah it seems that the vibration on mine has died down it just needed time to settle try it is really easy
Reply
Old Mar 30, 2009 | 06:14 PM
  #8  
Sittingmongoose's Avatar
TECH Resident
iTrader: (1)
 
Joined: Sep 2008
Posts: 898
Likes: 1
From: Philly
Default

i didnt get vibration but i did notice better handling because my engine was held in place better, its a no brainer to do
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Mar 30, 2009 | 07:56 PM
  #9  
Mels SS's Avatar
TECH Junkie
iTrader: (1)
 
Joined: Jun 2007
Posts: 3,159
Likes: 0
From: New Orleans La
Default

With the 3800 after market mount I have installed no vibration.
Before I changed this I did the flip I had no vibration
Reply
Old Mar 30, 2009 | 09:54 PM
  #10  
williamGT's Avatar
TECH Fanatic
iTrader: (5)
 
Joined: Jul 2008
Posts: 1,467
Likes: 0
From: Yellowknife NT Canada
Default

I want to do this also.....is it the 2 top mounts?
Reply
Old Mar 31, 2009 | 10:14 AM
  #11  
BuffaloSS's Avatar
TECH Addict
iTrader: (3)
 
Joined: May 2006
Posts: 2,421
Likes: 0
From: Buffalo, NY
Default

Originally Posted by Pauls325
Yeah it seems that the vibration on mine has died down it just needed time to settle try it is really easy
Not saying this is what happened, but it's possible that when turning the bushing the middle expanded section twisted out of the channel, which could have caused excess movement and vibration. I'm sure over time it would vibrate back into place.
Reply
Old Apr 11, 2009 | 08:21 PM
  #12  
beznich's Avatar
Launching!
 
Joined: Apr 2009
Posts: 233
Likes: 0
From: Boston, MA
Default

I did this on my 08 SS and never noticed any additional vibration, but the throttle response was very noticable.
Reply
Old Apr 11, 2009 | 11:41 PM
  #13  
williamGT's Avatar
TECH Fanatic
iTrader: (5)
 
Joined: Jul 2008
Posts: 1,467
Likes: 0
From: Yellowknife NT Canada
Default

What motor mount? 2 of them? I'm sorry for being a dumdum
Reply
Old Apr 12, 2009 | 12:07 AM
  #14  
LS4_SS's Avatar
On The Tree
 
Joined: Mar 2009
Posts: 123
Likes: 0
From: Pittsburgh PA
Default

the front one. that connects from your motor to your rad support.
Reply
Old Apr 12, 2009 | 12:09 AM
  #15  
williamGT's Avatar
TECH Fanatic
iTrader: (5)
 
Joined: Jul 2008
Posts: 1,467
Likes: 0
From: Yellowknife NT Canada
Default

Originally Posted by LS4_SS
the front one. that connects from your motor to your rad support.
Thanks
Reply
Old Apr 12, 2009 | 12:12 AM
  #16  
LS4_SS's Avatar
On The Tree
 
Joined: Mar 2009
Posts: 123
Likes: 0
From: Pittsburgh PA
Default

no problem. big difference in how the car responds when you jump on it.
Reply
Old Apr 12, 2009 | 06:10 PM
  #17  
Rossko85's Avatar
12 Second Club
iTrader: (11)
 
Joined: Feb 2009
Posts: 570
Likes: 0
From: Plainfield, IN
Default

I would recommend grabbn up an MSP poly mount and upgraded Poly upper bushings and a RAT Engine Stabalizer "Dogebone" if you can....they sell them at
www.3800performance.com they are for the V6ers, but they will work for ours...they are the same mount...I think you have to buy a pair of them(come in two cause the V6 has 2) so buddy up...I would recommend you upgrade all the hardware if your going to do it though...at least eventually, as you will fill much more of the benny!!! but the poly MSP is a great start to stiffin it up even more...the factory flip is good, but your still getting movement...which you guys know that already im sure as it has been posted about the minor movement..
Reply
Old Apr 14, 2009 | 03:12 PM
  #18  
beznich's Avatar
Launching!
 
Joined: Apr 2009
Posts: 233
Likes: 0
From: Boston, MA
Default

The good thing about the minor movement is that I have heard it cuts down on the vibration. I did it because it was a free mod so why not but on the same note as "Rossko85" I will most likely get a poly mount at some point.
Reply
Old Apr 14, 2009 | 04:12 PM
  #19  
Nacho SS's Avatar
TECH Junkie
iTrader: (4)
 
Joined: Feb 2007
Posts: 3,560
Likes: 0
From: 805-818
Default

Originally Posted by Rossko85
I would recommend grabbn up an MSP poly mount and upgraded Poly upper bushings and a RAT Engine Stabalizer "Dogebone" if you can....they sell them at
www.3800performance.com they are for the V6ers, but they will work for ours...they are the same mount...I think you have to buy a pair of them(come in two cause the V6 has 2) so buddy up...I would recommend you upgrade all the hardware if your going to do it though...at least eventually, as you will fill much more of the benny!!! but the poly MSP is a great start to stiffin it up even more...the factory flip is good, but your still getting movement...which you guys know that already im sure as it has been posted about the minor movement..
You can contact them and just buy one, they are a good company to deal with, great customer service and fast shipping.
Reply
Old Apr 23, 2009 | 06:56 PM
  #20  
1 CLEAN SUP3R SPORT's Avatar
Launching!
 
Joined: Apr 2009
Posts: 234
Likes: 0
From: FONTANA CA, 909 "IE"
Default

[QUOTE=Rossko85;11417739]I would recommend grabbn up an MSP poly mount and upgraded Poly upper bushings and a RAT Engine Stabalizer "Dogebone" if you can....they sell them at
www.3800performance.com they are for the V6ers, but they will work for ours...they are the same mount...I think you have to buy a pair of them(come in two cause the V6 has 2) so buddy up...I would recommend you upgrade all the hardware if your going to do it though...at least eventually, as you will fill much more of the benny!!! but the poly MSP is a great start to stiffin it up even more...the factory flip is good, but your still getting movement...which you guys know that already im sure as it has been posted about the minor movement..[/QUOT

IM GONNA DO MINE THIS WKND,BUT U SAY 2 UPGRADE ON THE HARD WARE,WHEN FLIPPIN STOCK,WHERE DO I FIND THE BETTER HARDWARE...DONT WANT 2 SEEM LIKE A DUMB QUESTION BUT IF I BUY THE NEW 1 WILL THE HARDWARE BE BETTER???:confuse

AND IF I HAVE TO I WILL OF THIS CONVERSATION,LOL
Reply



All times are GMT -5. The time now is 07:44 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE