Adapters that allow 6 speed transmissions (T56) to fit in your RX7's are being made now.

Please show your interest by posting in this thread here https://www.rx7club.com/forum/showth...hreadid=130168


Thanks.

 

oh no... the GM T56 is hardly geared towards the high revs of a rotary engine. This will only result in a decrease in acceleration.

edit: not saying there aren't properly geared 6 speeds, but the general population will be using trannies out of a GM camaro or such, which are geared for the low-rpm, high torque of the Chevy pushrod V8.

Adding this tranny will be like swapping the rear-end to a 3.5 ratio. Good top speed, but bye-bye accel.

 

We are also making adapters for T5,TKO and Tremec transmissions.


Please reply to the thread posted above if you are interested.

 

Unless you go bigger in back, too.

 

even with the 4.30, the total ratio is still about 2 points lower than stock.

 

Theres a difference between a true 6-speed and a 5 with an overdrive. =] As much as id like to have an extra gear, the stock tranny is pretty damn good all around.

 

This is for people wanting a tranni that will hold big power all around and also a tranni that will let you upgrade later down the road.

 

The only people i see braking TII trannies are guys like crispeed, and people with 20b's.

 

exactly. no GM 5+1 for me.


another excelent point. stocl trannies are fine unless you have ungodly power. ill keep my 5 speed.

 

I'd like to take a 6 speed and place a ratio between 4th and 5th in the .85:1 range. Actually be able to max out the stock 5th gear because you'd have power up through that ratio to be able to utilize the .69:1 our current OD is at.

Stock
4th 1:1
5th .69:1

My prefered tranny
4th 1:1
5th .85:1
6th .69:1

Should be able to pull 170mph with an N/A with that tranny.

 

Except for the huge lack of horsepower in an NA....

Christ, with an extra 100 hp, the 3rd Gen doesn't pull that speed.

 

doesnt the T56 have 2 overdrives? arnt 5th and 6th on that trans 1.0 and then something even lower?