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Th400 vs Built Auto

Old 06-16-07, 12:38 PM
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YouLose
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Default Th400 vs Built Auto

How ya doing guys.
Im in the process of building a NA-T/Daily driver sc3.
My main goal is around 500hp to 550ish.
I know theres few of these questions laying around here and so about trannies and i am 100% i did my research but i would like to know more about this.




-Thanks
Old 06-16-07, 12:59 PM
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ElitistK
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a built a350e or A343E should be fine at that level.
Old 06-16-07, 04:05 PM
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Go with the A340, boostlogic makes a highly regarded build. THe TH400 only has 3 speeds and you will have to do some mods to make it fit up, which will add cost
Old 06-16-07, 05:35 PM
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I was reading about the Boostlogic holding around 700hp, not sure about that.
Since the Th400 only has 3 speeds and it's some what a "drag tranny" is it suitable for daily driving and what not.
Whats the difference of the
A340
A350E
A343E
?
Old 06-16-07, 06:07 PM
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if you have the money and wanna stay auto while daily driving,
sound performance is selling the 4L80e tranny thats basically a th400 with overdrive. here's the link from supraforums

http://www.supraforums.com/forum/sho...d.php?t=424344

Last edited by Duckness; 06-17-07 at 12:55 PM. Reason: spell check
Old 06-16-07, 08:04 PM
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for your goals, a rebuild a way cheaper than the hoops to have to jump through to get the TH400 in there. The TH400 is a beast; but, a built Toyota A tranny is certainly capable of 550wtq

Last edited by Blizzy; 06-17-07 at 04:34 PM.
Old 06-16-07, 08:07 PM
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dang that kit is very costly
What are the significance changes in a built auto?
As of rebuilding a stock tranny would it be better to rebuild a Sc3 or supra tranny?

Last edited by YouLose; 06-16-07 at 08:48 PM.
Old 06-16-07, 09:33 PM
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You guys don't know what you're talking about. One way or another a built Toyota transmission will go. It's like a time bomb. Boostlogic or not.

Go with TH400 or it's modern 4 speed version. Sound Performance is selling a new transmission kit. It's little pricey but works awesome. It's TH400's modern version. It's 100% automatic 4 speed and is controlled by AEM EMS.
Old 06-16-07, 11:09 PM
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DirectQL

Whats the modern 4 speed version?
Can you give me some info on this and pricing, i am very interested.
Old 06-17-07, 09:53 AM
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Originally Posted by DIrEctQL
You guys don't know what you're talking about. One way or another a built Toyota transmission will go. It's like a time bomb. Boostlogic or not.

Go with TH400 or it's modern 4 speed version. Sound Performance is selling a new transmission kit. It's little pricey but works awesome. It's TH400's modern version. It's 100% automatic 4 speed and is controlled by AEM EMS.
im with him.
Old 06-17-07, 11:26 AM
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bens sc
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Originally Posted by DIrEctQL
You guys don't know what you're talking about. One way or another a built Toyota transmission will go. It's like a time bomb. Boostlogic or not.

Go with TH400 or it's modern 4 speed version. Sound Performance is selling a new transmission kit. It's little pricey but works awesome. It's TH400's modern version. It's 100% automatic 4 speed and is controlled by AEM EMS.
+2 im with him, toyo trannys are no good. get a th400 or a 4l80e and be done with it.
im currently considering ditching my 6 speed for a th400 for drag racing.
Old 06-17-07, 11:34 AM
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Originally Posted by YouLose
DirectQL

Whats the modern 4 speed version?
Can you give me some info on this and pricing, i am very interested.
As benssc mentioned it's 4L80E (4 speed read wheel drive 80 series electronic). It has 4 speeds, it's strong, and automatically switches gears. I'm not sure what the exact price is but I am sure it will be little out there.

Chris
Old 06-17-07, 11:53 AM
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As of purchasing a Chevy transmission, should i be cautious about mileage on the transmission and year/usage? Also what would be a better choice, a rebuilt one or stock.
I found a rebuilt 4l80e for $700 / TH400 Turbo-HydramaticTransmission for $140, does that sound realistic? Do they really go that cheap.


-Thank you very much, sorry for asking so many questions.

Last edited by YouLose; 06-17-07 at 12:07 PM.
Old 06-17-07, 12:54 PM
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oviously no one read my post =/
Old 06-17-07, 02:14 PM
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Originally Posted by Duckness
oviously no one read my post =/
I read your post.
And im starting to save up, hahaha, Just kidding.
BUT ! the one question that roams my mind is it worth to swap in a
4L80E it 7,500 + installation 1,500. I mind as well just buy a chevy or just get a Th400 even though it only has 3 speeds and the 4L80E has 4 and a few othere stuff here and there, i mean all this for one little NA-T engine.
=)

Last edited by YouLose; 06-17-07 at 02:30 PM.

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