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Old 03-03-2007, 10:07 AM   #1
CKeaton614
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Default Swapping Trany

I'm thinking of buying a 94 TT but it's automatic i got a good price on it but I really want a 6 speed. Anyone know how hard it would be to swap out the trany? Or if i should just keep looking for one with a 6 speed. This 94 only has 80k and the guy is letting it go for 18k. It's hard to pass up..
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Old 03-03-2007, 03:14 PM   #2
pwpanas
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Quote:
Originally Posted by CKeaton614
I'm thinking of buying a 94 TT but it's automatic i got a good price on it but I really want a 6 speed. Anyone know how hard it would be to swap out the trany? Or if i should just keep looking for one with a 6 speed. This 94 only has 80k and the guy is letting it go for 18k. It's hard to pass up..
All the info you need is at this link:
http://www.mkiv.com/techarticles/aut...wap/index.html

Ime, it'll definitely cost much more than the difference (parts+labor), so you're much better off to keep looking for a 6spd if that's what you need.

As an additional item to consider, note that an automatic is significantly more consistent, as well as being significantly faster in the 1/4 mile. Of course, it's also a lot less difficult for the driver. If you want to drag race your 94 TT, you might want to reconsider your desire for a 6 speed. On the other hand, if you want to roadrace (which is what the Mkiv Supra's jza80 chassis & suspension was designed for), I agree a 6 speed is a much better choice.
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Last edited by pwpanas; 03-09-2007 at 01:22 PM.
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Old 07-09-2009, 04:57 PM   #3
brianpa25
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Default tranny swap

I came across a guy, who bought an auto and claimed it was a bad choice, and he spent 19k to replace the auto with a 6 speed tranny. Granted he didn't spend 19k just to replace the auto for a 6 speed cause he had the cash laying around, he screwed up the tranny with an aftermarket turbo. Which is why he told me to look into 6 speed, said the auto can't handle upgraded turbo's. ???? Not sure about the truth in that either.
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Old 07-13-2009, 05:20 AM   #4
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Quote:
Originally Posted by brianpa25 View Post
I came across a guy, who bought an auto and claimed it was a bad choice, and he spent 19k to replace the auto with a 6 speed tranny. Granted he didn't spend 19k just to replace the auto for a 6 speed cause he had the cash laying around, he screwed up the tranny with an aftermarket turbo. Which is why he told me to look into 6 speed, said the auto can't handle upgraded turbo's. ???? Not sure about the truth in that either.
For roadracing, an auto tranny is a bad choice. It's all about your application, not an absolute bad-or-good of one tranny over another.

The upgraded auto tt tranny will handle a small or even mid-size (eg. T67) single turbo and moderate boost levels. For high boost and a big turbo (eg. T76+), you'll need either a 6spd or a TH400.
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Displacement is no replacement for boost.
Life begins at 30psi.


NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners.
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