T56 Install

[93Blackbird]

I know for sure that it will fit as I have ridden in a 91 T-bird with a T-56. There is a guy that doesn't post much on any MN12 based forums that lives in Rome, GA that converted his 5.0 car to a hydraulic setup T-5, then turned around a couple years later and put in the T-56. The car is wicked as hell too as it has a 331 twin turbo setup to go with the 6 speed. I could ask him to do a writeup about the conversion....

[ricardoa1]

There is not alot of information from people that have done this. I did not get to hear about the one that was attempted/completed? in an SC.

A new updated parts list can help get more people that are on the fence of this to take the jump.
The GTO T-56 is said to be stronger then the older camaro/firebird model. It is also supposed to put the shifter very close to the stock tunnel opening.

Most people know that with the MCleod adapter, it can be bolted up to a 3.8l/5.0l/5.8l, and different driveshaft length and modification to the cross member are necessary. But that about where it stops for common knowledge.

The other pieced that are of interest is what clutch, flywheel, slave cyl., starter are necessary to make it work.

Ford Racing catalogue has the T-56 for 5.0ls but we still have the shifter location with those units. And I think it is cable clutch still. $2400.

[Mike8675309]

If you're gonna keep your car under 600rwhp then a T-56 from newer generation may work. For certain, the ones out of the Firebird and such from GM are not strong enough for our cars if pushing over 300lb/ft of torque. The Viper gear set would work from that era of T-56. That's when I was looking into it. I haven't dug around since.

Last time I looked (2 years ago) the T-56 was getting into the Hot Rod aftermarket big time with all sorts of options available including different tail shaft housings, shift lever positions, and different gears, mix and match stuff. I figured that I could find whatever I need when I'm ready.

Tremec has the torque ratings published on their site.

[ricardoa1]

I noticed that they have a form for manufacturers to fill out.
I wonder if we get enough people in a buy we can get something custom set up to be a simple drop in.

Before we can ask them we would need measurements for our stock M5R2.



Size A
Size B
Size C
Size D
Size E
Size F
Size G
Size H

Input Shaft Pilot Dia.
Input Shaft (Spline Count)
Output Shaft (Spline Count)
Output Shaft Design
flange
slip yoke

[Mike Puckett]

When I talked to a Tremec tech rep last year he recommended the TKO.

[Super XR7]

Subscribing - something that I would like to do.

[Mike8675309]

This has been talked about quite a bit. Here is a thread over on TCCoA that has a image of the M5R2 trans and dimensions.
http://forums.tccoa.com/showthread.php?t=55283

Note that the future of manual transmissions is going to be the dual clutch transmissions. Their quite cool, and once they get rolling, their torque capacity should be quite nice.

[XR7 Dave]

Originally Posted by Mike8675309

For certain, the ones out of the Firebird and such from GM are not strong enough for our cars if pushing over 300lb/ft of torque.

I don't know where these ideas come from. Stock LT1's made over 300ftlbs torque. The transmissions being referred to here might not stand up to 5500rpm clutch dumps, but neither will your axles. I would have no reservations about putting one in my car. They are stronger than an M5R2.

[David Neibert]

Originally Posted by 93Blackbird

I know for sure that it will fit as I have ridden in a 91 T-bird with a T-56. There is a guy that doesn't post much on any MN12 based forums that lives in Rome, GA that converted his 5.0 car to a hydraulic setup T-5, then turned around a couple years later and put in the T-56. The car is wicked as hell too as it has a 331 twin turbo setup to go with the 6 speed. I could ask him to do a writeup about the conversion....

I'd love to hear more about this car. BTW are you talking about Wes ?

David

[Mike8675309]

Originally Posted by XR7 Dave

I don't know where these ideas come from. Stock LT1's made over 300ftlbs torque. The transmissions being referred to here might not stand up to 5500rpm clutch dumps, but neither will your axles. I would have no reservations about putting one in my car. They are stronger than an M5R2.

Typical torque ratings for the T-56 pulled out of a oem car are 400-450 lb/ft. Viper ratings are 550lb/ft. If I go through the trouble to put a t-56 in my car, I'm not going to have much stock about the rest of my drivetrain. I guess I shouldn't assume the same of others.

Viper transmissions have unique spline counts. 26 on the input 30 on the output. Fbody's have 26 on the input, but 27 on the output. Fords have 10 on the input and 31 on the output.

It's a very doable swap if someone has the time and a transmission.

[talonhead]

here are some pic of the eng/belh/trans plus some

[talonhead]

here are some parts/boxes with P/Ns

[talonhead]

did some measuring last night after work.
the center of the shifter on the t56 is maybe a little under an inch forward of the m5r2.

The trans looks to be about an inch shorter, but the trans mount is farther back 1-1 1/2".

The splined portion of pilot shaft goes into the crank pilot cavity about 1/4" maybe a tad more. (maybe a weld up and turn down to ford spec for some industrious person?)

Don't have an in the car fit up yet, have to call the machine shop to get pricing for work on engine.

Until the engine goes away for work I going to use it to fit as much as I can.
MikeH

[talonhead]

Was looking through a bunch of downloads and printouts here are a couple of tid bits.
Here are the McLeod parts recommended by Billy M (Tech advisor @ McLeod)
260571 is a 26 spline 11" disc for the LS1 T-56.

361954 P/P (going to use the Sach's I have <2000 miles)

P20810 Pressure Plate Shim.

No you do not need to change your slave. (changed same time as P/P)

Haven't found anyone with the shim or any info about it.
This may actually be easier than it sounds?
MikeH

[ricardoa1]

Trying to understand your notes.
The input shaft is too long where the pilot bearing is or is the spline part too bid and push/hit the pilot bearing.

I am also not following what clutch components you are going to use, are you using a LS1 T-56 clutch/pp with a 26 spline disc. And a stock LS1 slave or the stock SC slave?

Originally Posted by talonhead

Was looking through a bunch of downloads and printouts here are a couple of tid bits.
Here are the McLeod parts recommended by Billy M (Tech advisor @ McLeod)
260571 is a 26 spline 11" disc for the LS1 T-56.

361954 P/P (going to use the Sach's I have <2000 miles)

P20810 Pressure Plate Shim.

No you do not need to change your slave. (changed same time as P/P)

Haven't found anyone with the shim or any info about it.
This may actually be easier than it sounds?
MikeH