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

Rebuild Question

Thread Tools
 
Search this Thread
 
Old Nov 3, 2008 | 08:41 AM
  #1  
Orrin's Z's Avatar
Thread Starter
Teching In
 
Joined: Aug 2007
Posts: 20
Likes: 0
From: Post Falls, ID
Default Rebuild Question

I got the six speed in apart Thanks alot to Graysteal M6's Write up., and fount that the 1st/2nd syncronizer keys where sheared off.

now with the questions.

Replacement part list ATM:
1st/2nd Sycronizer keys
3rd/4th scronizer keys
1st/2nd shift fork pad
Isolator cup

Now that i have it apart is there anything else i should replace?

after second craped out the gear didn't spid down i had to grind it in. was that because of the Keys or should i replace the Friction cones for 1st and 2nd?

Also from the ginding i find it hard to slide the 1st/2nd Synchronizer Sleeve on too the 2nd gear, from the grinding there is alittle lip on the gear teeth and the sleeve, can i take a little metal file and smooth that down??? or do i have to replace all that????


I can post pic's later when i get home.

Thanks in advance for all your help.
Reply
Old Nov 3, 2008 | 09:14 AM
  #2  
85MikeTPI's Avatar
TECH Addict
iTrader: (9)
 
Joined: Jun 2008
Posts: 2,172
Likes: 10
From: Newark, DE
Default

Steel 3/4 fork.
Bronze fork pads on all 4 forks,
New friction kit for all synchros..

No reason to skimp on the rebuild while it's apart.

You can clean up the slider teeth with a file as long as they are not too bad. The rebuild manual has guildelines.
Reply
Old Nov 3, 2008 | 09:28 AM
  #3  
Orrin's Z's Avatar
Thread Starter
Teching In
 
Joined: Aug 2007
Posts: 20
Likes: 0
From: Post Falls, ID
Default

Why steel 3/4 fork???

where is a good site to buy these parts?
Reply
Old Nov 3, 2008 | 09:37 AM
  #4  
85MikeTPI's Avatar
TECH Addict
iTrader: (9)
 
Joined: Jun 2008
Posts: 2,172
Likes: 10
From: Newark, DE
Default

3/4 fork is known to bend under hard shifting. Vipers and later GM versions all came standard with them.

http://www.ddperformance.com/T-56 Parts.htm
http://www.tick-performance.com/tickshift/parts/

Do a search in this forum and you might find a few others.
Reply
Old Nov 3, 2008 | 11:19 AM
  #5  
1sick'98WS6's Avatar
TECH Fanatic
20 Year Member
iTrader: (19)
 
Joined: Jan 2005
Posts: 1,034
Likes: 1
From: Phoenix AZ
Default

The gearbox
Reply
Old Nov 3, 2008 | 11:46 PM
  #6  
davidz28man's Avatar
Teching In
iTrader: (11)
 
Joined: Jul 2008
Posts: 41
Likes: 0
From: goldsboro
Default t56

hey man i would also go with some billet key ways for the 1-2/ 3-4 . also found at the gear box.
Reply
Old Nov 4, 2008 | 09:04 AM
  #7  
Orrin's Z's Avatar
Thread Starter
Teching In
 
Joined: Aug 2007
Posts: 20
Likes: 0
From: Post Falls, ID
Default

yeah i was looking at the steel billet keys.

took the gears to a trany shop, they are recomending replacing the 1st, 2nd gear and syncro. dew to all the damage from the keys being broken.
Reply




All times are GMT -5. The time now is 05:07 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