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TH400 for my Honda S2000

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Old 05-24-2016, 09:05 PM
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Default TH400 for my Honda S2000

I've decided to ditch the 6 speed in favor of an automatic. I already have the bellhousing adapter plate as well as a custom flexplate (that allows me to reuse my stock flywheel). I'm relatively new to automatics, however, so I'm looking for advice. The car is mostly street driven (90% of the time), but will see some time at the drag strip. Looking for recommendations regarding the size/stall of the torque converter? Transbrake worth it (since it's mostly a street car)? Any favorite/highly regarded company? Specs below in an effort to get the most applicable responses. Thanks in advance!

2.2 litre (87mm x 90mm)...30psi...750rwhp...8800rpm redline...6500rpm 2step...Ford 8.8 rear (3.89 FD)

(Cross post from the Auto Trans section)
Old 05-25-2016, 07:23 AM
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I got my 400 from JW race transmissions. Eric usually answers the phone and the customer support is 2nd to none there great guy I called him and talked to him for half an hour before I decided to buy from them. he is also a former Honda guy as well. I cant say enough and they can work with you for the converter as well. I have bought both from them and they are a great company.
Old 05-25-2016, 07:59 AM
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Thanks for the reply! I'll give them a call.
Old 05-25-2016, 08:09 AM
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Just another consideration....
why not something more modern with more gears? I run a 6L80. (6 speed as in corvette, up to '15 camaro automatic) That's probably overkill for you, since your car is so light.
But a 4L80 would have overdrive.

I know if I were street driving a TH400, it'd feel like I was driving a dinosaur.
Old 05-25-2016, 09:52 AM
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DW SD, thanks for the suggestion. Looked up the 4/6L80; they are quite heavy! I will keep them in mind before making a final decision. Awesome truck btw. I don't mind using an archaic unit (THXXX) if it works haha.
Old 05-25-2016, 11:32 AM
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Sure! And thanks! With newer trans you can also add paddle shifters, different shift tunes, etc.
Depends what your goals are, obviously.
Good luck!

Doug
Old 05-25-2016, 01:28 PM
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4l80 is an old trans as well lol. and they are damn heavy. the weight and electronics is why I shyed away from those trans.
Old 05-25-2016, 06:01 PM
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4l80 are heavy but worth the extra gear. Especially if its 90% street. As light as your car is you could probably get by with a stocker.
Old 05-25-2016, 06:02 PM
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You will have to have some kind of controller with the 4l80 so thats another $500
Old 05-26-2016, 09:21 PM
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Boosted cars don't need lots of gears, however, on the street OD is nice. Coming from the Turbo-Buick arena, I'd say take a good look at the 200R4. It can be built to live behind 800+ ft-lbs, it's lighter and smaller than a 400, and it has a 2.74 1st gear to keep that turbo loaded...
Old 05-27-2016, 01:58 AM
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Was the S2000 ever offered as a hard top car?
Old 05-27-2016, 10:03 AM
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Originally Posted by Blown06
Was the S2000 ever offered as a hard top car?
dealer option was a hard top but it was like 7K
Old 05-27-2016, 05:06 PM
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Originally Posted by Blown06
Was the S2000 ever offered as a hard top car?
The hardtop option was discontinued several years ago. You can find them used for $3-4k depending on condition.
Old 05-27-2016, 06:31 PM
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Waiting to see a ginormous turbo bolted to a F22....
Old 05-28-2016, 10:18 AM
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Originally Posted by 70 Bug Mid Engine


Waiting to see a ginormous turbo bolted to a F22....
TH400 Adapter plates
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Old 02-09-2017, 09:02 PM
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i'm looking for an s2k adapter plate. where did you get yours?
thanx
Old 02-12-2017, 10:02 AM
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The adapter plate says D3 on it and google says they have them.

Think I may have seen this car around, it just keeps getting wilder! 8.8 rear?



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