People running T56 trans got some ?????

[Bimmerman]

I have done some searching but haven't answered all my questions. When bolting one in are they any major mods that must be done? Where is your shifter sitting? What did you use for a crossmember? Driveshaft? I am seriously concidering going with one but want to make sure it is worth the trouble.

[Bimmerman]

I found out that if you go with the GM aftermarket Tremec

 

GM Aftermarket T56

This swap will be the simplest and least expensive. It will

bolt right up to your bellhousing, use your stock clutch setup,

stock fork, pilot bearing, throwout bearing, etc. This

transmission utilizes a 27 spline slip yoke, which is the same as a

TH350 yoke.

You’ll need

mechanical speedometer gear adapter

26 spline clutch disk

to modify your crossmember

shorten your driveshaft

 

From here http://5speedtransmissions.com/t56_early_gm.html

[Phantom]

The difficulty in mounting the T56 varies by body. The tunnel on the 240Z is narrower than the 280Z and requires more 'adjusting'. My 280Z required only a small dimple in one area. The shifter location is dependent on location. A V8 located in either the JTR or JCI location will bring the shifter up no more than 1/2" forward of the stock Z shifter location on a 280Z. Not sure about the 240 or any ZX models.

 

Look at the cost of the mechanical speedometer adapter for a T56, parts & labor. It's not cheap. Then look at using a CableX unit that takes the electronic output from the T56 and uses an electric motor to drive the mecahnical speedometer. It has a few tricky requirements to ensure it works right though so it would be a personal preference item. I think if I had it to do over again I'd spend the extra money an go with the mechanical output from the T56.