LS1TECH - Camaro and Firebird Forum Discussion

Manual Transmission T56 | T5 | MN12 | Clutches | Hydraulics | Shifters

t56 vibration?

Thread Tools
 
Search this Thread
 
Old May 17, 2011 | 06:38 AM
Share
  #1  
lbmrider927's Avatar
lbmrider927
Thread Starter
Teching In
iTrader: (1)
 
Joined: Oct 2010
Posts: 26
Likes: 0
From: Northern, MN
Default t56 vibration?
I have a lt1 with a t56 and have been chasing a vibration for a long while now. I thought it was a rear end issue but I started pulling wheels axles and such off and the vibration remained and got worse. It is a nine inch but anyway I pulled the driveshaft and put a yoke in the tranny to try that and the vibration was still there. The vibration goes away when I push the clutch in so I swapped the tranny with another one I had and vibration got softer but still remains starts at about 65 and progressively worse all the way up any gear.
ANY IDEAS?
Reply
0
Old May 17, 2011 | 08:47 AM
Share
  #2  
chmilll's Avatar
chmilll
Teching In
 
Joined: Sep 2008
Posts: 22
Likes: 0
From: SE Houston, Tx
Default
how old is the actual clutch disk? could be the disk chattering due to wear.
Reply
0
Old May 17, 2011 | 11:37 AM
Share
  #3  
lbmrider927's Avatar
lbmrider927
Thread Starter
Teching In
iTrader: (1)
 
Joined: Oct 2010
Posts: 26
Likes: 0
From: Northern, MN
Default
Two different ones, two different engines, two different flywheels, pressure plates
Reply
0
Old May 17, 2011 | 01:29 PM
Share
  #4  
chmilll's Avatar
chmilll
Teching In
 
Joined: Sep 2008
Posts: 22
Likes: 0
From: SE Houston, Tx
Default
are there any visible imperfections on driveshaft, i.e.: dents, dings, scratches?
Reply
0
Old May 17, 2011 | 01:59 PM
Share
  #5  
lbmrider927's Avatar
lbmrider927
Thread Starter
Teching In
iTrader: (1)
 
Joined: Oct 2010
Posts: 26
Likes: 0
From: Northern, MN
Default
Tried 2 different ones and like I said it does it with just a yoke in the trans
Reply
0
Old May 17, 2011 | 02:07 PM
Share
  #6  
chmilll's Avatar
chmilll
Teching In
 
Joined: Sep 2008
Posts: 22
Likes: 0
From: SE Houston, Tx
Default
condition of mounts? and type?
Reply
0
Old May 17, 2011 | 02:13 PM
Share
  #7  
lbmrider927's Avatar
lbmrider927
Thread Starter
Teching In
iTrader: (1)
 
Joined: Oct 2010
Posts: 26
Likes: 0
From: Northern, MN
Default
Rubber. And less than 10k miles no cracking or separation.
Reply
0

Trending Topics

Old May 17, 2011 | 02:23 PM
Share
  #8  
chmilll's Avatar
chmilll
Teching In
 
Joined: Sep 2008
Posts: 22
Likes: 0
From: SE Houston, Tx
Default
whats the condition of the motor? good plugs wires things of that nature? harmonic balancer?
Reply
0
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 May 17, 2011 | 02:44 PM
Share
  #9  
lbmrider927's Avatar
lbmrider927
Thread Starter
Teching In
iTrader: (1)
 
Joined: Oct 2010
Posts: 26
Likes: 0
From: Northern, MN
Default
ATI balancer two different engines one neutral balanced forged 383 and now a stock balanced 350 and no vibration with clutch In.
Reply
0
Old May 17, 2011 | 02:46 PM
Share
  #10  
Randal McSandal's Avatar
Randal McSandal
On The Tree
iTrader: (3)
 
Joined: Jun 2009
Posts: 194
Likes: 0
From: Southern Indiana
Default
Pinion angle?
Reply
0
Old May 17, 2011 | 03:20 PM
Share
  #11  
thesource's Avatar
thesource
Banned
iTrader: (60)
 
Joined: Mar 2005
Posts: 2,693
Likes: 0
From: Adkins - Tx
Default
Any gear specifically or just speed related?
Reply
0
Old May 17, 2011 | 06:37 PM
Share
  #12  
lbmrider927's Avatar
lbmrider927
Thread Starter
Teching In
iTrader: (1)
 
Joined: Oct 2010
Posts: 26
Likes: 0
From: Northern, MN
Default
Just speed
Reply
0
Old May 17, 2011 | 07:02 PM
Share
  #13  
thesource's Avatar
thesource
Banned
iTrader: (60)
 
Joined: Mar 2005
Posts: 2,693
Likes: 0
From: Adkins - Tx
Default
Where do you feel the vibration at and does it go away when you push the clutch in or remain until it slows down?
Reply
0
Old May 17, 2011 | 09:36 PM
Share
  #14  
lbmrider927's Avatar
lbmrider927
Thread Starter
Teching In
iTrader: (1)
 
Joined: Oct 2010
Posts: 26
Likes: 0
From: Northern, MN
Default
65-150+ and I have tried it with no driveshaft and just a yoke in the trans the vibration is there same speed on the speedo and in two transmissions.?
Reply
0
Old May 19, 2011 | 11:25 PM
Share
  #15  
lbmrider927's Avatar
lbmrider927
Thread Starter
Teching In
iTrader: (1)
 
Joined: Oct 2010
Posts: 26
Likes: 0
From: Northern, MN
Default
output shaft or any other ideas?
Reply
0
Old May 19, 2011 | 11:32 PM
Share
  #16  
Tx91z28's Avatar
Tx91z28
On The Tree
 
Joined: Mar 2009
Posts: 121
Likes: 0
From: Kemah
Default
tail shaft bushing?
Reply
0
Old May 19, 2011 | 11:36 PM
Share
  #17  
slowside's Avatar
slowside
Teching In
 
Joined: Feb 2010
Posts: 31
Likes: 0
From: Mason
Default
I am a complete noob, but if its speed related. That rules out drivetrain(because the rear would be constant and trans/engine would be different speeds maybe showing up at the same spot in each gear) except for rear end with axels and such, I know little about rears but I understand that if a rotating part isn't balanced or straight/true its going tell you. The only other places that would matter would be wheel/tire balance, or wheel bearing but the wheel bearing would make a constant sound.
Reply
0
Old May 19, 2011 | 11:43 PM
Share
  #18  
lbmrider927's Avatar
lbmrider927
Thread Starter
Teching In
iTrader: (1)
 
Joined: Oct 2010
Posts: 26
Likes: 0
From: Northern, MN
Default
it vibrates without a driveshaft in... leading me to beleave its in the trans, now is there a common issue with t56s or do i just have two t56s with vibrations at the same speed?
Reply
0
Old May 31, 2011 | 10:11 AM
Share
  #19  
chmilll's Avatar
chmilll
Teching In
 
Joined: Sep 2008
Posts: 22
Likes: 0
From: SE Houston, Tx
Default
did you find the problem/ a solution to your vibration issue?
Reply
0
Old Jul 12, 2011 | 10:35 AM
Share
  #20  
lbmrider927's Avatar
lbmrider927
Thread Starter
Teching In
iTrader: (1)
 
Joined: Oct 2010
Posts: 26
Likes: 0
From: Northern, MN
Default
Problem is still there and I have friend that had his trans rebuilt and now with it back in it has the same issue as mine
Reply
0



Advanced Search

All times are GMT -5. The time now is 07:23 PM.

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