New LS1 Owners - Newbie Tech Basic Technical Questions & Advice
Sponsored by:
Sponsored by:

Trans Mount Bad?

Thread Tools
 
Search this Thread
 
Old May 2, 2009 | 11:23 PM
  #1  
my bandit's Avatar
Thread Starter
TECH Addict
iTrader: (10)
 
Joined: Dec 2007
Posts: 2,052
Likes: 1
From: Jacksonville, Fl
Default Trans Mount Bad?

when i have it in D my car doesnt vibrate much but once i drop it into 3rd it starts to vibarte bad like im running over a bad patch of road. could a bad trans mount be what is causing this?
the car has 121k on the clock
Reply
Old May 6, 2009 | 12:54 AM
  #2  
01ssreda4's Avatar
TECH Senior Member
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (96)
 
Joined: Aug 2007
Posts: 24,241
Likes: 89
From: Turnin' Wrenches Infractions: 005
Default

maybe, change it.
Reply
Old May 6, 2009 | 12:59 AM
  #3  
slayerized6's Avatar
TECH Fanatic
iTrader: (12)
 
Joined: Oct 2006
Posts: 1,592
Likes: 1
Default

could be either a trans mount issue or a trans issue. i suggest you change the trans mount first. get an energy suspension mount for $20
Reply
Old May 6, 2009 | 01:37 AM
  #4  
01ssreda4's Avatar
TECH Senior Member
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (96)
 
Joined: Aug 2007
Posts: 24,241
Likes: 89
From: Turnin' Wrenches Infractions: 005
Default

Originally Posted by slayerized6
could be either a trans mount issue or a trans issue. i suggest you change the trans mount first. get an energy suspension mount for $20
no, get a factory rubber one unless you have poly motor mounts. this guy is trying to get you a broken tailshaft.
Reply
Old May 6, 2009 | 03:08 AM
  #5  
Ls1Rook's Avatar
12 Second Club
iTrader: (1)
 
Joined: Mar 2008
Posts: 265
Likes: 0
From: Texas
Default

Its your tranny, i have the same problem... needs a rebuilt.
Reply
Old May 10, 2009 | 04:45 PM
  #6  
zuuhlsT/A's Avatar
TECH Apprentice
iTrader: (2)
 
Joined: Jan 2006
Posts: 397
Likes: 0
From: North Jersey
Default

Check your universal joints and your drive shaft too. Mine was outta balance and gave me a hella bad vib at high RPM'S.
Reply
Old May 10, 2009 | 05:03 PM
  #7  
twitchtwice's Avatar
12 Second Club
iTrader: (12)
 
Joined: May 2008
Posts: 2,612
Likes: 1
Default

first just look at your mount, you can easily jack the car up (or have a lift take it up like me) and just look at the mount and see if its cracked, loose or damaged. and if it is go with a stock rubber mount. DO NOT GET A POLY TRANNY MOUNT, I REPEAT NO POLY MOUNT. if you do this will put all the engine vibrations into the tranny since the motor mounts will be softer.

it could also be your ypipe banging in the upper rpms as well. take a look at that.
Reply
Old May 11, 2009 | 08:26 AM
  #8  
blueshark123's Avatar
On The Tree
iTrader: (51)
 
Joined: Nov 2008
Posts: 131
Likes: 2
From: NJ
Default

Sounds like a tranny issue. There shouldnt be a difference in vibration between D and 3. Doesnt hurt to check the mount though.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

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

 Verdad Gallardo
story-4

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

 Pouria Savadkouei
story-5

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

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

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

 Verdad Gallardo
Old May 11, 2009 | 08:56 AM
  #9  
blueshark123's Avatar
On The Tree
iTrader: (51)
 
Joined: Nov 2008
Posts: 131
Likes: 2
From: NJ
Default

Sounds like a tranny issue. There shouldnt be a difference in vibration between D and 3. Doesnt hurt to check the mount though.
Reply
Old May 11, 2009 | 06:15 PM
  #10  
LSwut's Avatar
Staging Lane
iTrader: (2)
 
Joined: Feb 2009
Posts: 98
Likes: 0
From: Bridgewater,Mass
Default

my 98 z28 does the same exact thing. i have a poly tranny mount and 373's. i was kinda hoping it was a driveshaft issue not the tranny.
Reply
Old May 14, 2009 | 08:09 PM
  #11  
SuperSam's Avatar
Launching!
iTrader: (7)
 
Joined: May 2004
Posts: 248
Likes: 0
From: Dallas, Tx
Default

It can be a number of things. Tranny mount...ds...tranny.
Reply
Old May 14, 2009 | 08:24 PM
  #12  
boola1341's Avatar
12 Second Club
iTrader: (1)
 
Joined: May 2007
Posts: 558
Likes: 0
From: Meherrin Va.
Default

I have a level 2 performabuilt trans and 3000k stall with the same problem. I'm still searching.
Reply
Old May 18, 2009 | 10:32 PM
  #13  
barnat's Avatar
TECH Fanatic
iTrader: (59)
 
Joined: Jan 2007
Posts: 1,736
Likes: 0
From: Pittsburgh,Pa
Default tranny

I just talked to Frank at Performance trannys about a hour ago LOL about my new Rossler stage (3) 4L60 making a clunking noise when it goes from 2nd into 3rd,,, and he said alot of trannys do this because once into third EVERTHING inside the tranny spins together in one direction (that quick) and is why its like a clunk Now, a vibration may be something else? Ide try a new mount first and call Frank at Performace trannys! Hes on here all the time in the tranny sect and is VERY cool about helping guys out with questions
Good luck Barnat
Reply
Old May 23, 2009 | 02:49 PM
  #14  
99camarolee's Avatar
Teching In
 
Joined: Dec 2008
Posts: 2
Likes: 0
Default

get a t56 that'll fix it
Reply




All times are GMT -5. The time now is 11:12 PM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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