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Old 11-21-08, 02:29 PM
  #26  
HAHA V8

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Originally Posted by darkphantom
/\ dunno just my prefrence. i did a top speed run with my car on the 478 and i ran out of gears/rpm at 191mph @ 8400rpm! and the 5th gear takes forever to get up to speed. 3-4 it pulls but in 5th the car really doesnt start to pull until you hit 170. I know im crazy for going that fast but i love high speed.


i have pictures of the Power fc commander but as i told everyone the speedometer said one thing and the power fc said another!
I have had my baby up to 175 MPH racing a Camaro SS on spray. I know what you mean about the 5th gear thing. When I switched from 4.10s to 4.33s it made a difference. You might want to look into that. Your top speed will go down, but your 5th gear pull will be stronger. What are the ratios on the RX8 6 speed compared to the RX7 5 speed?
Old 11-21-08, 03:10 PM
  #27  
The king of the highway!

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/\ yeah i remember that vid. i saved it, the camaro got caught by the police!

HERES ONE OF THE HIGH SPEED RUNS I DID! i have no video cause i was in the car by my self (440hp)



as far as i can see it would be a little more speed with the rx8 only with the extra gear gets me there a little faster as i will be in the powerband more often! and with the 3.9 final drive ill run out of gears before i run out of rpms

Last edited by darkphantom; 11-21-08 at 03:12 PM.
Old 11-21-08, 04:44 PM
  #28  
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Dude, get the getrag from the supra.

Its able to hold alot of power and you can go well over 200mph.

Here is another clip, notice how he shifts just before 8k rpm. Since you're squeezing more rpm's in each gear, this tranny is perfect for you.

http://ca.youtube.com/watch?v=mcCRkSPAocc
Old 11-21-08, 05:10 PM
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Rx7 Wagon

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Originally Posted by crcleofdst
I was referring to your high speed runs on a public highway, not your trans swap plans.
+1
Old 11-21-08, 05:11 PM
  #30  
Rx7 Wagon

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Originally Posted by 87 t-66
waste of time/money.
+1
Old 11-21-08, 06:45 PM
  #31  
The king of the highway!

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Originally Posted by 1QWIK7
Dude, get the getrag from the supra.

Its able to hold alot of power and you can go well over 200mph.

Here is another clip, notice how he shifts just before 8k rpm. Since you're squeezing more rpm's in each gear, this tranny is perfect for you.

http://ca.youtube.com/watch?v=mcCRkSPAocc
i already considered that as one of my options. he was asking me about the gearing on the 6speed rx8 gearbox
Old 11-21-08, 07:13 PM
  #32  
HAHA V8

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Originally Posted by 1QWIK7
Dude, get the getrag from the supra.

Its able to hold alot of power and you can go well over 200mph.

Here is another clip, notice how he shifts just before 8k rpm. Since you're squeezing more rpm's in each gear, this tranny is perfect for you.

http://ca.youtube.com/watch?v=mcCRkSPAocc
i would rather do the T-56 from the GTO. Cheaper and a better tranny.
Old 11-21-08, 07:20 PM
  #33  
The king of the highway!

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/\ price?
Old 11-21-08, 08:12 PM
  #34  
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CT rx8 tranny

im waiting to see this rx8 tranny actually functional in the car.Good luck
Old 11-21-08, 08:14 PM
  #35  
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CT rx8 tranny

im waiting to see this tranny fully functional in the car. Good luck
Old 11-22-08, 01:50 AM
  #36  
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Originally Posted by darkphantom
/\ price?
The T-56's can be had for 1200-2500 dollars depending on if you get one for the LT1, Ls1/2, or a built one.

I can understand about wanting a 6spd. I've gotten use to the one in my C5, and I always find myself hunting for another gear in the FD and S13...
Old 11-22-08, 12:33 PM
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you wont find a getrag for no less than $3k and can skyrocket from there. i've seen several abused trannies that need a rebuild go for $600 tho.

mosey on over to supraforums.com they should be able to give you a good idea on what a decent price for a getrag is.
Old 11-22-08, 12:41 PM
  #38  
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looks nice, good job maintaining it
Old 11-22-08, 01:27 PM
  #39  
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It's my understanding that the gears and shafts simply aren't as beefy in the RX-8 trannys. Not something that a shop could do much with.

I suppose I could try to find someone with an RX-8 tranny that needs rebuilt. That should provide some really good information about it.

Dave
Old 11-23-08, 06:40 AM
  #40  
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A guy here in PR with a 20B swap RX-8 had the main shaft(s?) custom made in cromoly. He said with just that change the transmission holds up to a lot of power.

i think there's a thread in the 8 club.
Old 11-23-08, 07:30 AM
  #41  
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your Top speed wont increase by going to an FE 6 speed tranny

the reason being.. both tranny's have the same Final Drive

you will be adding a gear somewhere between 3rd and 4th If I remember correctly

which is pretty useless.. since our turbo cars have the tortque to power through it
Old 11-24-08, 07:48 AM
  #42  
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Originally Posted by darkphantom
i know but you know what. its my money not yours! but maybe some help will come out of this maybe not!
+1

how do you think people innovate or engineer things, they try it out! maybe by finding the weak points, we can be able to have a 6 speed transmission.
Old 11-24-08, 04:17 PM
  #43  
The king of the highway!

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ottoman i was planning on changing the final drive in the rx8 6 speed!

but if this works i can see alot of people having 6 speed fds
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