LT1-LT4 Modifications 1993-97 Gen II Small Block V8

FML. T-56 Input Shaft Question

Thread Tools
 
Search this Thread
 
Old 09-13-2009, 01:49 AM
  #1  
TECH Senior Member
Thread Starter
iTrader: (8)
 
gregrob's Avatar
 
Join Date: Sep 2008
Location: 6,000+ feet
Posts: 5,130
Likes: 0
Received 4 Likes on 4 Posts

Default FML. T-56 Input Shaft Question

To make a loooong story very short.

Rebuilt my T-56 w all the goodies.

4th gear / input was included in that build because the original was damaged (rounded engagement dogs)

Bought most parts from thegearbox.org, and a few from D&D

Wrestled, fought, cussed, stabbed, dropped, stabbed, dropped, etc for the better part of 5 hrs.

Trans *WILL NOT* go all the way flush w the bell housing.

After eliminating everything else, and I mean everything: TOB, splines, pilot bearing, etc.

I have determined the only thing that could be causing my issue is the bastards sent me a ******* LS1 input shaft....

Which is approx 1.5" longer, right...


Sooooo my question is that being the case (and I'm pretty damn sure it is) can I do anything to just USE the longer shaft?

Alternative is tear it completely back apart, and rebuild w correct input.

What do I need, lsx bell hsg? Will my existing clutch work? What else?

I'm beat with this thing
Old 09-13-2009, 03:08 AM
  #2  
Teching In
iTrader: (1)
 
MustangKilla's Avatar
 
Join Date: Mar 2009
Location: Dallas, Texas
Posts: 22
Likes: 0
Received 0 Likes on 0 Posts

Default

one thing i overlooked when trying to reinstall my t-56 was the clutch fork. it likes to sit right where the TOB is (close to the middle). Just wondering if you tried pulling it back first before sliding the input shaft in. I was under the impression that 93-02 t56's where are same and the names where changed to protect the innocent
Old 09-13-2009, 01:57 PM
  #3  
TECH Senior Member
Thread Starter
iTrader: (8)
 
gregrob's Avatar
 
Join Date: Sep 2008
Location: 6,000+ feet
Posts: 5,130
Likes: 0
Received 4 Likes on 4 Posts

Default

Def not the fork
Old 09-13-2009, 02:47 PM
  #4  
11 Second Club
iTrader: (4)
 
waltsfastz's Avatar
 
Join Date: Jan 2005
Location: Rowletts,KY
Posts: 1,004
Likes: 0
Received 0 Likes on 0 Posts

Default

Damn that sux. The input shaft is the very last piece to come out. IDk though. are the splines on the LS1 and Lt1 diffrent? I thought they were but I could be wrong
Old 09-13-2009, 04:20 PM
  #5  
Staging Lane
 
edunegan's Avatar
 
Join Date: Apr 2009
Location: bokchito
Posts: 55
Likes: 0
Received 0 Likes on 0 Posts
Default

the shaft is longer on ls1 due to the mounting of the throw out bearing . not that ur loookin forward yo pullin it back apart but ur gonna have to if ur positive u have the wrong shaft
Old 09-13-2009, 08:53 PM
  #6  
11 Second Club
iTrader: (88)
 
the_merv's Avatar
 
Join Date: Mar 2006
Location: The Beach...
Posts: 19,261
Received 63 Likes on 54 Posts

Default

The Splines are the same..how much of a difference is there? The LS1 Input Shaft isn't 1.5" longer, more like 1/2"..close to that.

I don't think that many of you here have torn down a T56.. the Input Shaft is VERY easily removed..


Here is what you need to do if that is your problem..

1. Remove the 11 Bolts in the Front Plate.

2. Remove the Input Shaft.

3. Get LT1 Input Shaft and install new Bearing on it.

4. Check Bearing Clearances/Preload and re-shim the new Input Shaft with the Mainshaft.

5. RTV Frontplate and re-install to spec.

6. Install in car and check.
Old 09-13-2009, 11:26 PM
  #7  
TECH Senior Member
Thread Starter
iTrader: (8)
 
gregrob's Avatar
 
Join Date: Sep 2008
Location: 6,000+ feet
Posts: 5,130
Likes: 0
Received 4 Likes on 4 Posts

Default

Holy crap! Really? Even my builder thought it had to come all the way apart.

It only looks like maybe 1/2-3/4 inch or so of mating together w the bellhsg.

Im gonna call thegearbox tomorrow and ask that they overnight me a new shaft if they sent the wrong one.

Thanks Merv!
Old 09-13-2009, 11:33 PM
  #8  
11 Second Club
iTrader: (88)
 
the_merv's Avatar
 
Join Date: Mar 2006
Location: The Beach...
Posts: 19,261
Received 63 Likes on 54 Posts

Default

No prob man.
Old 09-13-2009, 11:38 PM
  #9  
TECH Senior Member
Thread Starter
iTrader: (8)
 
gregrob's Avatar
 
Join Date: Sep 2008
Location: 6,000+ feet
Posts: 5,130
Likes: 0
Received 4 Likes on 4 Posts

Default

On another note, whats the chances of me just chopping off the pilot shaft area on the end of the shaft?

That portion alone looks to be maybe 1/4 longer than my old one.

I could cut off the ~1/2" it needs and re-taper it if theres enough there???
Old 09-13-2009, 11:48 PM
  #10  
11 Second Club
iTrader: (88)
 
the_merv's Avatar
 
Join Date: Mar 2006
Location: The Beach...
Posts: 19,261
Received 63 Likes on 54 Posts

Default

A Machine Shop may be able to machine it down if it's the longer one.

I found this so I could be wrong on the length that I said previously..

LT input length: 9-1/4"

LS input length: 10-5/8"
Old 09-13-2009, 11:53 PM
  #11  
TECH Senior Member
Thread Starter
iTrader: (8)
 
gregrob's Avatar
 
Join Date: Sep 2008
Location: 6,000+ feet
Posts: 5,130
Likes: 0
Received 4 Likes on 4 Posts

Default

So around 1.3" longer.

Dont know if there would be enough left over after chopping it down that much.

Even if I have to swap it tho, doesnt sound too bad.
Old 09-14-2009, 06:18 AM
  #12  
12 Second Club
iTrader: (129)
 
fergymoto's Avatar
 
Join Date: Aug 2005
Location: Rock Hill, SC
Posts: 2,810
Likes: 0
Received 2 Likes on 2 Posts

Default

Are you sure you have the clutch disc centered to the pilot bearing?
Old 09-14-2009, 11:54 AM
  #13  
TECH Senior Member
Thread Starter
iTrader: (8)
 
gregrob's Avatar
 
Join Date: Sep 2008
Location: 6,000+ feet
Posts: 5,130
Likes: 0
Received 4 Likes on 4 Posts

Default

Yes. 1,000,000,00,000,000% sure.

I called thegearbox today and confirmed. They DID send me an 010 input which is for lsx.

Sending out a new one today. They did make me pay the $27 difference in cost btw the two, which is reasonable I guess.

They are sending me a new front bearing with it which is cool cause its a PITA to pull off sometimes.

Should have her swapped out and installed this wknd.
Old 09-14-2009, 12:43 PM
  #14  
11 Second Club
iTrader: (17)
 
AChotrod's Avatar
 
Join Date: Jul 2008
Location: Chicago area
Posts: 9,896
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by fergymoto
Are you sure you have the clutch disc centered to the pilot bearing?
Try doing it with a twin disc clutch and no alignment tool!!
Thank god a finally found one that worked at a local parts store!!!
Old 09-14-2009, 01:12 PM
  #15  
jmd
TECH Addict
iTrader: (4)
 
jmd's Avatar
 
Join Date: May 2002
Location: T56th Street, Aridzona
Posts: 2,561
Received 26 Likes on 24 Posts

Post

Originally Posted by gregrob
On another note, whats the chances of me just chopping off the pilot shaft area on the end of the shaft?

That portion alone looks to be maybe 1/4 longer than my old one.

I could cut off the ~1/2" it needs and re-taper it if theres enough there???
Nope.



Good to hear you figured it out and they're taking care of you.
Old 09-14-2009, 01:48 PM
  #16  
11 Second Club
iTrader: (88)
 
the_merv's Avatar
 
Join Date: Mar 2006
Location: The Beach...
Posts: 19,261
Received 63 Likes on 54 Posts

Default

Very good picture.
Old 09-14-2009, 03:13 PM
  #17  
TECH Senior Member
Thread Starter
iTrader: (8)
 
gregrob's Avatar
 
Join Date: Sep 2008
Location: 6,000+ feet
Posts: 5,130
Likes: 0
Received 4 Likes on 4 Posts

Default

Yep, just a tad too long... Lol



Quick Reply: FML. T-56 Input Shaft Question



All times are GMT -5. The time now is 06:31 PM.