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-   -   6 Speed transmission adapters now available for FC's! (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/6-speed-transmission-adapters-now-available-fcs-130564/)

Resource 11-06-02 04:47 PM

6 Speed transmission adapters now available for FC's!
 
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.

scathcart 11-06-02 04:51 PM

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.

Resource 11-06-02 06:07 PM

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


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

kristopher_d 11-06-02 08:07 PM


Originally posted by scathcart
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.

Unless you go bigger in back, too. ;)

scathcart 11-06-02 08:15 PM


Originally posted by kristopher_d


Unless you go bigger in back, too. ;)

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

cymfc3s 11-06-02 08:26 PM

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.

Resource 11-06-02 11:10 PM

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.

Dyre 11-07-02 12:05 AM

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

FC Drifter 11-07-02 01:08 AM


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.
exactly. no GM 5+1 for me.



The only people i see braking TII trannies are guys like crispeed, and people with 20b's.
another excelent point. stocl trannies are fine unless you have ungodly power. ill keep my 5 speed.

Jimmy325i 11-07-02 02:34 AM

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.

scathcart 11-07-02 07:16 PM


Originally posted by Jimmy325i
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.

OC_ 11-08-02 06:28 AM

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


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