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TH400 Swap.....What yr TH400???

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Old 02-26-2012, 10:03 AM
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Default TH400 Swap.....What yr TH400???

I am the beginning stages of a TH400 swap. I need to buy a Th400 and I am curious is there a certain year I should get or stay away from?

What about the tail shaft lengths? I read somewhere I needed a 4" tail shaft. Is this true?

Thank you
Old 02-26-2012, 10:22 AM
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i have two models for sale. chevy pattern. Ones a new TCI 212500 built for 750 hp, and ones an ATI max duty for the 1400whp boosted stuff that has been freshened after 7 passes, griner brake, 2.10 gear set. let me know if of these interest you. I have the th400/LS conversion cross member too, brand new.
Old 02-26-2012, 06:57 PM
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Well I did alot of research today on the TH400 swap. I have a couple questions regarding the converter and spacer. I have a TCI flexplate (399753) that i am running now. So what converter and spacer do I need for this whole trans to bolt up. Thank you for any help...
Old 02-26-2012, 07:04 PM
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You will need a converter with LS pilot.



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