Going From An NP435 to TH400

Trigger · 08-08-2011, 05:17 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, 06:29 PM

Will the ORD adapter work? http://offroaddesign.com/catalog/transfercaseparts.htm

JeffK5 · 08-08-2011, 08:21 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, 08:53 PM

Quote:

Originally Posted by JeffK5

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, 09:01 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 · 08-08-2011, 11:39 PM

Not a bad option if I can find a decent 300 for a reasonable price.
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jwend · 08-09-2011, 11:08 AM

your buddy Leslie has one

Trigger · 08-18-2011, 04:28 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, 08:38 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, 12:05 AM

Yes, I still want it. I'm still in Nebraska.

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08-08-2011, 05:17 PM	#1
Trigger Join Date: Mar 2007 Location: Xenia, OH Posts: 281	Going From An NP435 to TH400 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.

08-08-2011, 09:01 PM	#5
jwend Did I offend you? Join Date: Feb 2010 Location: Independence, ky Posts: 544	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 __________________ Dont look @ me in that tone of voice or I WILL PUNCH YOU IN THE SHIRT! :mad: Last edited by jwend; 08-08-2011 at 09:13 PM. Reason: didnt like the link

08-09-2011, 11:08 AM	#7
jwend Did I offend you? Join Date: Feb 2010 Location: Independence, ky Posts: 544	your buddy Leslie has one __________________ Dont look @ me in that tone of voice or I WILL PUNCH YOU IN THE SHIRT! :mad:

08-18-2011, 08:38 PM	#9
jwend Did I offend you? Join Date: Feb 2010 Location: Independence, ky Posts: 544	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.. __________________ Dont look @ me in that tone of voice or I WILL PUNCH YOU IN THE SHIRT! :mad:

08-08-2011, 06:29 PM	#2
93 Krawler >>>PMC<<< - CORE Member - - Administrator - Join Date: Sep 2010 Location: Ross, OH Posts: 2,069 Images: 1268	Will the ORD adapter work? http://offroaddesign.com/catalog/transfercaseparts.htm

08-08-2011, 08:21 PM	#3
JeffK5 Tiny Member Join Date: Jan 2007 Location: Colerain Posts: 798	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.

08-08-2011, 11:39 PM	#6
Trigger Join Date: Mar 2007 Location: Xenia, OH Posts: 281	Not a bad option if I can find a decent 300 for a reasonable price. Sent from my ADR6400L using Tapatalk

08-18-2011, 04:28 PM	#8
Trigger Join Date: Mar 2007 Location: Xenia, OH Posts: 281	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.

08-19-2011, 12:05 AM	#10
Trigger Join Date: Mar 2007 Location: Xenia, OH Posts: 281	Yes, I still want it. I'm still in Nebraska. Sent from my ADR6400L using Tapatalk