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

M6 Build or Replace?

Thread Tools
 
Search this Thread
 
Old Nov 1, 2009 | 05:16 PM
  #1  
muteki's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Oct 2008
Posts: 164
Likes: 1
From: Guam
Default M6 Build or Replace?

Ok guys, I am planning for the future. Right now, my WS-9 is pretty much stock. I did order my Magnaflow exhaust, Im waiting for it to arrive. I plan to change to LTH, an intake, 12 bolt with 4:88, and lots of suspension stuff but motor wise, Im not doing much for a couple years. The reason is, I don't trust the mechanics here on this remote island to do my engine internal stuff. So, since there is a GM dealer here...I plan to stuff the LS-7 into it around 160k miles. I know there are cheaper and more HP routes to go for the money...I have been through that lecture before...BUT it is more reliable for me to get something that the dealer can work on if something goes wrong.

Now, here is my question. I have the M6, I am assuming it is a T56, since it seems like every post in this section has T56 written in it somewhere. We all know thw LS-7 is 505 HP. With intake exhaust and headers with catalyst delete, I am assuming I will be in the 525-550 range....no dynos here to test either. I have read about the tranny and rear ends being the weak link, but will my T-56 handle this mod? Is there anyway to bulletproof the T-56 to handle around 700HP in case I decide to NOS or suupercharge it in the future? Or would it be more feasable just to replace it with a totally new trans?

Thanks in advance.
Reply
Old Nov 1, 2009 | 05:29 PM
  #2  
LS123's Avatar
Banned
iTrader: (11)
 
Joined: Mar 2004
Posts: 376
Likes: 0
From: Rowing 6 speeds Maryland
Default

If you upgrade the output shaft to 30 spline from the Viper and related upgrades, it should be good for 800 FT LBS.
Reply
Old Nov 1, 2009 | 05:32 PM
  #3  
muteki's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Oct 2008
Posts: 164
Likes: 1
From: Guam
Default

Ok, I was planning to put in a monster clutch when it is time....I still have the original in it. Maybe I will plan this mod when I change the clutch. Thanks, I will read up on it.
Reply
Old Nov 1, 2009 | 08:31 PM
  #4  
8budchevy's Avatar
Staging Lane
iTrader: (4)
 
Joined: Apr 2007
Posts: 57
Likes: 0
From: Goodlettsville, TN
Default

The 3/4 fork upgrade from stock (aluminum) to cast is recommended. I plan to do the same in my rebuild this winter. Snycros are real bad on my 100k 98
Reply
Old Nov 2, 2009 | 06:22 AM
  #5  
muteki's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Oct 2008
Posts: 164
Likes: 1
From: Guam
Default

I did read and saw the pix on that post a coupel days ago, that is why I came up with this one. I would have never thought the fork would make much difference, but I dont want to be in that situation either.
Reply
Old Nov 2, 2009 | 06:56 AM
  #6  
LS123's Avatar
Banned
iTrader: (11)
 
Joined: Mar 2004
Posts: 376
Likes: 0
From: Rowing 6 speeds Maryland
Default

The upgrade consist of the following:

Steel 3-4 shift fork

Billet keys for 3-4 and 5-6 (1-2 for F-body since they use stamped steel keys like 3-4 and 5-6; Vettes use powered metal which doesn't need replacing)

Bronze fork pads (1 through 6 AND reverse)
Reply
Old Nov 2, 2009 | 04:34 PM
  #7  
muteki's Avatar
Thread Starter
On The Tree
iTrader: (1)
 
Joined: Oct 2008
Posts: 164
Likes: 1
From: Guam
Default

Thanks, noted.
Reply




All times are GMT -5. The time now is 07:21 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