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View Full Version : Going From An NP435 to TH400


Trigger
08-08-2011, 06:17 PM
Asked this on Pirate and didn't get much response, so I figured I'd ask here. My current setup is 5.3L/NP435/Ford 205. I picked up a TH400 and am wanting to swap the 4-speed for the auto. I know that I'm going to need a different flywheel/adapter that I can get from AA to mate the tranny to the engine. I'm not too concerned about that, as it's only about $150 from AA. They also make an adapter that will mate the Ford 205 to the TH400, but it runs over $600 and I don't really want to spend that much.

Are there any cheaper alternatives to get this done? Anyone had any experience with doing it? Let me know.

93 Krawler
08-08-2011, 07:29 PM
Will the ORD adapter work? http://offroaddesign.com/catalog/transfercaseparts.htm

JeffK5
08-08-2011, 09:21 PM
This should help if you didn't find it on PBB already...

http://www.pirate4x4.com/forum/showthread.php?t=866064

Did you check over on Hardline about what they use to adapt the GM trans to a Ford style 205?

I'd have a hard time sinking $600+ in adapters to keep a $100 T-case... unless you're strictly a rock bouncer and have no need for a better low range.

Trigger
08-08-2011, 09:53 PM
I'd have a hard time sinking $600+ in adapters to keep a $100 T-case... unless you're strictly a rock bouncer and have no need for a better low range.
that's pretty much my feelings, but I can't really afford a different t-case right now.

jwend
08-08-2011, 10:01 PM
buy ya a 300, flip it and do a new input shaft (on 300) not trans you already have the adapter on that 400 i am almost positive.. prob have to do a new front drive shaft... you may have 3 or 400 in the get up.... then you have a better crawl ratio

Trigger
08-09-2011, 12:39 AM
Not a bad option if I can find a decent 300 for a reasonable price.
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jwend
08-09-2011, 12:08 PM
your buddy Leslie has one

Trigger
08-18-2011, 05:28 PM
What about using a Klune or a Black Box as the adapter? That would help my crawl ratio. Would that work? It would be cheaper than an Atlas.

jwend
08-18-2011, 09:38 PM
buy the time you mess with it you are going to wish you just got a atlas.... take it from me i have spent 4k on tring to go the cheap route ... enough to buy one and a new built trans.... Yer rig works real well now you have the trans just stack the money then do it... you will always want a atlas if not....

by the way i took that fly wheel and adapter of today if you still want it..

Trigger
08-19-2011, 01:05 AM
Yes, I still want it. I'm still in Nebraska.

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