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6 Speed transmission adapters now available for FC's!

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Old 11-06-02, 04:47 PM
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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.
Old 11-06-02, 04:51 PM
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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.

Last edited by scathcart; 11-06-02 at 04:59 PM.
Old 11-06-02, 06:07 PM
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We are also making adapters for T5,TKO and Tremec transmissions.


Please reply to the thread posted above if you are interested.
Old 11-06-02, 08:07 PM
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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.
Old 11-06-02, 08:15 PM
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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.
Old 11-06-02, 08:26 PM
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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.
Old 11-06-02, 11:10 PM
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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.
Old 11-07-02, 12:05 AM
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The only people i see braking TII trannies are guys like crispeed, and people with 20b's.
Old 11-07-02, 01:08 AM
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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.
Old 11-07-02, 02:34 AM
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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.
Old 11-07-02, 07:16 PM
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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.
Old 11-08-02, 06:28 AM
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doesnt the T56 have 2 overdrives? arnt 5th and 6th on that trans 1.0 and then something even lower?
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