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-   -   6 speed transmission upgrade (https://www.nopistons.com/3rd-generation-specific-18/6-speed-transmission-upgrade-71560/)

brian_fd3s 01-27-2009 09:12 PM

hey im just finishing my winter upgrade on my car that i bought last year and one of the things that im in need of is a transmission. my car isnt completely done yet so i have yet to dyno it but im guessing it should put out in the 550 range so i need something that can handle some power. i definitely want to go with a dog gear setup for fast shifts and i am really hoping to find a good 6 speed. im wanting to have the first 5 gears lower then stock for my racing gears and then since my car is street driven i want to have my 6th gear for highway driving so about the same ratio as the factory 5th. ive look at lots of forums for trannies but every time i find one that i like, its not sold anymore, like the quaife gear kit and the guru gear kit. so anyone know of any good 6 speeds that are still available for sale that are reasonably priced? right now my last hope is the hks transmission but those are a little bit on the pricey side. let me know fd lovers

treceb 01-27-2009 11:18 PM

getrag from an mkiv supra?

brian_fd3s 01-28-2009 08:23 PM

how do they fit? what modifications do you have to make to the tranny/ car?

mazdaspeed7 01-28-2009 08:40 PM

Sorry for linking to the other forum, but its too good not to...



http://www.rx7club.com/showthread.php?t=655772



GTO T56 trans behind a 20b

MrFc 01-29-2009 03:09 PM


Originally Posted by mazdaspeed7' post='915597' date='Jan 28 2009, 08:40 PM
Sorry for linking to the other forum, but its too good not to...



http://www.rx7club.com/showthread.php?t=655772



GTO T56 trans behind a 20b



how about the turbo 400 trannys or a gtreg tranny from a skyline?

brian_fd3s 01-31-2009 10:29 PM

ya ive looked at that forum with the gto... looks nice. defenetally one to think about. do you know how the turbo 400 and skyline tranny would fit? i would think the turbo 400 would be too big and havent herd about any done from the skyline, it would have to be the gts-t model if you did it wouldnt it?

mazdaspeed7 02-01-2009 10:33 AM

Arent the skyline trannies only 5 speed? Not to mention that have an awd transfer case as part of it.

Rob x-7 02-01-2009 05:52 PM

turbo 400 transmission is a automatic



personally I dont like having a 6 speed in a car im used to having 5 speeds, consider a beefier 5 speed instead, the gearing on a 6 speed makes for too much shifting. Its hard to explain until you drive both cars back to back.

To_slow 02-03-2009 09:46 AM


Originally Posted by brian_fd3s' post='915464' date='Jan 27 2009, 07:12 PM
hey im just finishing my winter upgrade on my car that i bought last year and one of the things that im in need of is a transmission. my car isnt completely done yet so i have yet to dyno it but im guessing it should put out in the 550 range so i need something that can handle some power. i definitely want to go with a dog gear setup for fast shifts and i am really hoping to find a good 6 speed. im wanting to have the first 5 gears lower then stock for my racing gears and then since my car is street driven i want to have my 6th gear for highway driving so about the same ratio as the factory 5th. ive look at lots of forums for trannies but every time i find one that i like, its not sold anymore, like the quaife gear kit and the guru gear kit. so anyone know of any good 6 speeds that are still available for sale that are reasonably priced? right now my last hope is the hks transmission but those are a little bit on the pricey side. let me know fd lovers



Any 6 speed that will hold a nice 500 foot ponds custom fitted to a rotary will run you at 7k $$$. Allot of people want to run a 6 speed its just not a hole lot want to spend that much money.



It all depends on your budget, if you have the money you can put anything together.

brian_fd3s 02-03-2009 09:52 PM

well i dont mind spending 7 grand on a tranny, im willing to spend 10 if i can get what i want... where could i get one built for 7 grand?

Maxt 02-05-2009 04:31 AM

You could do a g-force T56 so you could choose your ratio's. To get a really nice well round transmission with good gear spacing, you end up with a 6 speed. If it was a just a drag or road race car, a 5 speed would work well enough. The other option is a hewland/hollinger/quaife/PPG but they can be pretty pricey, then again you can dictate your ratio's. The hollinger is worth more than most FD's, but its a really slick transmission.

I have a HKS 6 speed, it is a wicked transmission, driving a dog box is not for everyone, especially on the street, and with the HKS box, if you break it, good luck repairing it, since HKS does not sell parts for it. If it breaks, they want you to box up the whole transmission and send it back, that gets a little pricey. That being said, when mine broke I had a local transmission guru take it apart, lucky nothing was broken just a nut backed off. The nice thing about it, is it bolts in with no fuss.

The quaife is still available as the 6 speed kit, Greddy use to sell it as their own.

Not to many people do the tranny upgrade as it cost so much, but the dog gear mod makes a world of difference on a boosted car, say goodbye to turbo lag.

awdcsm 04-02-2009 01:52 AM

which 6 spd tranny has the best gear ratio?


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