What is the difference between a Corvette version and a Camaro/Firebird version T56 trans from LT1 cars?

Is it a big deal to convert a unit from a Camaro to a Vette ?

What is involved?

Thanks...

 

The T56 was never available in the C4.
C4's used the ZF6 6-speed transmission.

 

you are right! BUT..does that mean I'm out of luck?

My old C4 is anything but stock. Half 86 and half 93.

 

I think I have the conversion info saved on my shop computer, will post tomorrow.

Do you have the T56? If not I have a good one that I'll let go.

 

Found the info.

Did not save the thread link just the text.

I've got a 95 LT1 C4, I want it for DE, so it has to have a manual tranny. Lot's of T56 with lots of options and vendors, and I even have an almost new fbody LS1 T-56 on the garage. Sweeet would be a nice swap for this tranny; if its not a major PITA, I would like to go ahead with pics.

Bellhousing

AFIK fitment at the engine side would be solved with this bellhousing (RM-6023 - SB/BB Chevy Bellhousing to T56 LS-1 Chevy Transmission):
http://www.quicktimeinc.com/products.html#chevy
or maybe these guys:
http://www.weirhotrodproducts.com/id2.html

Tailshaft, channel & center plates

for the tailshaft side I would need this kit (T-56 * 6-Speed CONVERSION KIT):
http://www.prostreetcustoms.net/CorvettePage.html
It says it contains the following:
"C" Channel Bracket.
Bottom Tail Shaft Plate..
3/4" Center Plate.
2- 8x1/2" Grade 8 Bolts.
3- 10mm x 1.5 Mount Bolts.
1- Top Fastener Bracket.
1- Set Installation Book.

He also can make an adapter plate for the shifter placement (which would be at the center by default).

Parts list

Other things I would need:
Pedal assembly
Spec's 3+ or Z06 clutch kit (11" aftermarket or stock config)
flywheel
pressure plate
throwout and pilot bearings
Master/slave cylinder
Hurst short shifter
Shifter boot
Console trim
Reverse lock pigtail
Floor Tunnel Hump

Any parts I would be missing? Should I better use a'LT1 T-56? (although the throwout bearing from the LS1 T-56 is a hydraulic unit that eliminates the clutch fork and is a push style)

Reference for a bare 84 full LT1 engine/T-56 tranny swap (may I need a different driveshaft even with the adapter kit?):
http://forums.corvetteforum.com/c4-t...ed-help-2.html






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Some have made their own C Beam adapter

 

I have a T-56 swapped into my Vette and if I had to do it again I would use a LS-1 T-56. The LS-1 transmission seems to have more options, like after market bellhousings and scatter shields. It also has a push style pressure plate and can accept a larger flywheel. My LT-1 T-56 has the pull type and the slave cylinder was right next to the header. I had to do some machining to get some distance between them. The LT-1 T-56 has a 153 tooth flywheel, so I don't think you can get an 11" clutch to fit (haven't done it don't know).

- I bought an after market custom made flywheel from McCloud in 96 or 97, so that I could use the transmission behind a two piece flywheel. If I had that to do all over again I would have gone aluminum. I was told that the aluminum would have been too light for the street and would have been difficult to drive, but with the thickness of the flywheel the aluminum would have still weighed more or near the stock flywheel weight. It was thick, because the clutch is a pull type and the hub of the clutch faces the back of the motor and fits into the recess build into the flywheel.

- You will have to have some kind of bracket to attach the transmission to the channel that runs to the differential. I made my own.

- You will have to adapt the slave cylinder to the master cylinder with a custom line. I used an AN-4 line with a fitting I got off of eBay for the slave cylinder and a AN-4 to M10x1.0 adapter (let me check on that to be sure).

- You will need to have a drive shaft made to the right length and with the right universal joints. The differential takes a 1330 joint, while the T-56 shaft had some little universals in it that were held in with melted plastic.

- You will need the yoke for the drive shaft to fit into the T-56

- Depending upon your year model you may have to modify the hole for the shifter. I used the hole in the floor board, but will customize my shifter to work.

- You will have to modify the front exhaust hangers.

I haven't got to the point where I have to modify the speed sensor to work, but anticipate that coming as well. I didn't have to do anything electrically to get the transmission to work, but eventually I will wire the reverse lockout and as for the skip shift well forget it.

Hope this helps. I swapped this into a Vette because I originally had all of this swapped into a Fireturd until it got creamed. I really liked the way this transmission shifted compared to my dads ZF.

 

Great info...many thanks!

 

Another good thing about the T-56 is that it doesn't have the noisy marble sound or the funky whinny sound in first that the ZF has, it is a very nice shifting transmission and its quiet.

 

Finally got around to uploading some pictures of my T56 adapter bracket.

http://trevorroebuck.com/Cars/default.asp

Thanks

 

BigC4 Keisler sells the speedo kit along with others

You can have the back of the flywheel machined to take out weight, I have one like yours and removed 12 lbs from the rear of the flywheel and is plenty stout still.