T56 6 speed what is difference between LS1 - LT1 versions? - CamaroZ28.Com Message Board


Advanced Tech Advanced tech discussion. Major rebuilds, engine theory, etc.
HIGH-END DISCUSSION ONLY - NOT FOR GENERAL TECH INFO

Reply
 
Thread Tools Search this Thread
Old 08-15-2002, 08:25 AM   #1
Registered User
Thread Starter
 
Join Date: Jul 2002
Posts: 7
Question T56 6 speed what is difference between LS1 - LT1 versions?

I know bell housing is different but is mainshaft too? I have T56 behind LT1 and though if i can use it with LS1 ???
thanks!
Bowtie racing is offline   Reply With Quote
Old 08-15-2002, 12:12 PM   #2
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 45,493
Post

The differences I have noticed while helping people pull T56's is that the LS1 front plate on the tranny has mounting provisions for the hydraulic "push" type slave cylinder, while the LT1 has the fork ball, which is not used on the LS1. The LS1 bell housing lacks the mount/studs for the slave cylinder cup, but has a cutout to access the slave cylinder bleed nut.

I am pretty sure the length of the input shaft is different.... you need to verify that, but I'm pretty sure that's the case.

------------------
Fred
94 Formula A3+1: 381/TH400+OD/N2O

Advanced Tech Posting Guidelines
Detailed Mod's List
[email protected] on motor; [email protected], 1.643 60' on a 125-shot. Going with a 275-shot this year
Injuneer is offline   Reply With Quote
Old 08-15-2002, 09:27 PM   #3
Registered User
 
Join Date: Feb 2001
Location: milford oh us
Posts: 6
Post

Yes the mainshaft(4th gear) is about 1.5 inches longer. The front plate and bellhousing are also different. All else is the same.
blown95ta is offline   Reply With Quote
Old 08-22-2002, 09:17 PM   #4
Registered User
 
Eric Bryant's Avatar
 
Join Date: Aug 2001
Location: Michigan's left coast
Posts: 2,413
Post

I can verify that the "midplate" (front of the transmission housing) and input shaft are different (along with the bellhousing, of course). I converted a LS1 trans over for use in my LT1 application.

If you're interested, I've got a LS1 input shaft and bellhousing sitting around, both in excellent condition. Trust me that you don't want to pay dealer prices on these items.

------------------
1996 Impala SS - LT4 396, T56
1996 GMC K2500
1992 Buick Roadmaster Estate Wagon
Eric Bryant is offline   Reply With Quote
Old 08-23-2002, 04:20 PM   #5
Registered User
 
Join Date: Jan 2001
Location: Bay Area, CA
Posts: 2,148
Post

I don't know the design differences, but the brand and supposedly quality (strength) changed with the LS1 version, for the worse.
Dr.Mudge is offline   Reply With Quote
Old 08-23-2002, 09:51 PM   #6
Registered User
 
Eric Bryant's Avatar
 
Join Date: Aug 2001
Location: Michigan's left coast
Posts: 2,413
Post

Around '98, Tremec bought out BWA (Borg Warner Automotive), who of course owned Muncie. Production of the transmission was moved from Muncie, IN to Tremec's Mexico plant. This is when the rumors started flying about the LS1 transmissions being weaker than the LT1 versions, despite the fact that they both use the same parts manufacturered by effectively the same company.

------------------
1996 Impala SS - LT4 396, T56
1996 GMC K2500
1992 Buick Roadmaster Estate Wagon
Eric Bryant is offline   Reply With Quote
Old 08-25-2002, 06:23 PM   #7
Registered User
 
Join Date: Aug 2000
Location: Glen Burnie, Md
Posts: 229
Post

Our shop has seen about a 10:1 ratio of broken LS1 T56s to LT1
LTOne4Fun is offline   Reply With Quote
Old 07-20-2011, 05:14 PM   #9
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 45,493
Re: T56 6 speed what is difference between LS1 - LT1 versions?

Eric has not visited this site since 1/21/2009. If you want to contact him, try e-mailing him. Left click on his screen name, and the drop down will offer the option to send him an e-mail (if he permits e-mails).

And of course his post is 9 years old..... but maybe he still has the parts.
Injuneer is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
1996 Chevy Camaro Z28 SS w less than 19k org. miles F'n1996Z28SS Cars For Sale 6 04-02-2015 10:02 PM
*excellent info* 93 specific info list. chevroletfreak LT1 Based Engine Tech 202 07-04-2005 05:00 PM
Rockford RFX9300 head unit having problems!! slothgrant Car Audio and Electronics 0 08-22-2002 03:01 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 11:39 AM.


Copyright © 1996-2017 CamaroZ28.com. All rights reserved.