Automatic Transmission - Big power TH-400 builders inside
04-04-2008, 04:12 AM
What parts would you guys use in a TH-400 for say 1,200hp???
Thinking about upgrading to better gearing in it also
Vince @ FLT
04-04-2008, 07:40 AM
Definitely get a good input drum that uses a billet shaft. I would also recommend using a sprag style int clutch maybe even a super sprag drum. A billet main shaft would be a good idea as well. As far as a gear set a 210 is the most popular. With that kind of hp make sure to get a reinforced bell like a TW bell. Vince
04-06-2008, 03:50 AM
Could I run a factory bell with a ful sheild or should I have both?
Vince @ FLT
04-06-2008, 07:08 AM
You can run a SFI shield. The bell is just much stronger. I have one I am doing for a guy using a th350 right now. He usually brakes a case once a year doing wheelie's. The after market bell is much thicker and will fix this problem.
04-06-2008, 07:33 PM
I have been to JW down here where I live only about 45 minutes from me took a tour of thier shop was really impressed they make the Ultra bell right there on site beefy piece also they are making some other stuff that I had the priveledge to see but took an oath not to talk about will be out soon But as vince said get the bell you wont regret it
04-07-2008, 04:01 AM
I checked out the JW and will have to get one.
04-07-2008, 06:45 PM
The JW Ultrabell is thick as HELL. I think it could handle a small bomb blast.
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